21981960

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:109

約数の個数: 384

約数和(自身を含む): 97493760

約数和(自身を除く): 75511800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 20, 21, 22, 24, 26, 28, 30, 33, 35, 36, 39, 40, 42, 44, 45, 52, 55, 56, 60, 61, 63, 65, 66, 70, 72, 77, 78, 84, 88, 90, 91, 99, 104, 105, 110, 117, 120, 122, 126, 130, 132, 140, 143, 154, 156, 165, 168, 180, 182, 183, 195, 198, 210, 220, 231, 234, 244, 252, 260, 264, 273, 280, 286, 305, 308, 312, 315, 330, 360, 364, 366, 385, 390, 396, 420, 427, 429, 440, 455, 462, 468, 488, 495, 504, 520, 546, 549, 572, 585, 610, 616, 630, 660, 671, 693, 715, 728, 732, 770, 780, 792, 793, 819, 840, 854, 858, 910, 915, 924, 936, 990, 1001, 1092, 1098, 1144, 1155, 1170, 1220, 1260, 1281, 1287, 1320, 1342, 1365, 1386, 1430, 1464, 1540, 1560, 1586, 1638, 1708, 1716, 1820, 1830, 1848, 1980, 2002, 2013, 2135, 2145, 2184, 2196, 2310, 2340, 2379, 2440, 2520, 2562, 2574, 2684, 2730, 2745, 2772, 2860, 3003, 3080, 3172, 3276, 3355, 3416, 3432, 3465, 3640, 3660, 3843, 3960, 3965, 4004, 4026, 4095, 4270, 4290, 4392, 4620, 4680, 4697, 4758, 5005, 5124, 5148, 5368, 5460, 5490, 5544, 5551, 5720, 6006, 6039, 6344, 6405, 6435, 6552, 6710, 6930, 7137, 7320, 7686, 7930, 8008, 8052, 8190, 8540, 8580, 8723, 9009, 9240, 9394, 9516, 10010, 10065, 10248, 10296, 10920, 10980, 11102, 11895, 12012, 12078, 12810, 12870, 13420, 13860, 14091, 14274, 15015, 15372, 15860, 16104, 16380, 16653, 17080, 17160, 17446, 18018, 18788, 19032, 19215, 20020, 20130, 21960, 22204, 23485, 23790, 24024, 24156, 25620, 25740, 26169, 26840, 27720, 27755, 28182, 28548, 30030, 30195, 30744, 31720, 32760, 33306, 34892, 35685, 36036, 37576, 38430, 40040, 40260, 42273, 43615, 44408, 45045, 46970, 47580, 48312, 49959, 51240, 51480, 52338, 55510, 56364, 57096, 60060, 60390, 61061, 66612, 69784, 70455, 71370, 72072, 76860, 78507, 80520, 83265, 84546, 87230, 90090, 93940, 95160, 99918, 104676, 111020, 112728, 120120, 120780, 122122, 130845, 133224, 140910, 142740, 153720, 157014, 166530, 169092, 174460, 180180, 183183, 187880, 199836, 209352, 211365, 222040, 241560, 244244, 249795, 261690, 281820, 285480, 305305, 314028, 333060, 338184, 348920, 360360, 366366, 392535, 399672, 422730, 488488, 499590, 523380, 549549, 563640, 610610, 628056, 666120, 732732, 785070, 845460, 915915, 999180, 1046760, 1099098, 1221220, 1465464, 1570140, 1690920, 1831830, 1998360, 2198196, 2442440, 2747745, 3140280, 3663660, 4396392, 5495490, 7327320, 10990980, 21981960]

約数ペア:

[(1, 21981960), (2, 10990980), (3, 7327320), (4, 5495490), (5, 4396392), (6, 3663660), (7, 3140280), (8, 2747745), (9, 2442440), (10, 2198196), (11, 1998360), (12, 1831830), (13, 1690920), (14, 1570140), (15, 1465464), (18, 1221220), (20, 1099098), (21, 1046760), (22, 999180), (24, 915915), (26, 845460), (28, 785070), (30, 732732), (33, 666120), (35, 628056), (36, 610610), (39, 563640), (40, 549549), (42, 523380), (44, 499590), (45, 488488), (52, 422730), (55, 399672), (56, 392535), (60, 366366), (61, 360360), (63, 348920), (65, 338184), (66, 333060), (70, 314028), (72, 305305), (77, 285480), (78, 281820), (84, 261690), (88, 249795), (90, 244244), (91, 241560), (99, 222040), (104, 211365), (105, 209352), (110, 199836), (117, 187880), (120, 183183), (122, 180180), (126, 174460), (130, 169092), (132, 166530), (140, 157014), (143, 153720), (154, 142740), (156, 140910), (165, 133224), (168, 130845), (180, 122122), (182, 120780), (183, 120120), (195, 112728), (198, 111020), (210, 104676), (220, 99918), (231, 95160), (234, 93940), (244, 90090), (252, 87230), (260, 84546), (264, 83265), (273, 80520), (280, 78507), (286, 76860), (305, 72072), (308, 71370), (312, 70455), (315, 69784), (330, 66612), (360, 61061), (364, 60390), (366, 60060), (385, 57096), (390, 56364), (396, 55510), (420, 52338), (427, 51480), (429, 51240), (440, 49959), (455, 48312), (462, 47580), (468, 46970), (488, 45045), (495, 44408), (504, 43615), (520, 42273), (546, 40260), (549, 40040), (572, 38430), (585, 37576), (610, 36036), (616, 35685), (630, 34892), (660, 33306), (671, 32760), (693, 31720), (715, 30744), (728, 30195), (732, 30030), (770, 28548), (780, 28182), (792, 27755), (793, 27720), (819, 26840), (840, 26169), (854, 25740), (858, 25620), (910, 24156), (915, 24024), (924, 23790), (936, 23485), (990, 22204), (1001, 21960), (1092, 20130), (1098, 20020), (1144, 19215), (1155, 19032), (1170, 18788), (1220, 18018), (1260, 17446), (1281, 17160), (1287, 17080), (1320, 16653), (1342, 16380), (1365, 16104), (1386, 15860), (1430, 15372), (1464, 15015), (1540, 14274), (1560, 14091), (1586, 13860), (1638, 13420), (1708, 12870), (1716, 12810), (1820, 12078), (1830, 12012), (1848, 11895), (1980, 11102), (2002, 10980), (2013, 10920), (2135, 10296), (2145, 10248), (2184, 10065), (2196, 10010), (2310, 9516), (2340, 9394), (2379, 9240), (2440, 9009), (2520, 8723), (2562, 8580), (2574, 8540), (2684, 8190), (2730, 8052), (2745, 8008), (2772, 7930), (2860, 7686), (3003, 7320), (3080, 7137), (3172, 6930), (3276, 6710), (3355, 6552), (3416, 6435), (3432, 6405), (3465, 6344), (3640, 6039), (3660, 6006), (3843, 5720), (3960, 5551), (3965, 5544), (4004, 5490), (4026, 5460), (4095, 5368), (4270, 5148), (4290, 5124), (4392, 5005), (4620, 4758), (4680, 4697)]