21115080

素因数分解:

$2^3\times 3^4\times 5^1\times 7^3\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 320

約数和(自身を含む): 87120000

約数和(自身を除く): 66004920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 27, 28, 30, 35, 36, 38, 40, 42, 45, 49, 54, 56, 57, 60, 63, 70, 72, 76, 81, 84, 90, 95, 98, 105, 108, 114, 120, 126, 133, 135, 140, 147, 152, 162, 168, 171, 180, 189, 190, 196, 210, 216, 228, 245, 252, 266, 270, 280, 285, 294, 315, 324, 342, 343, 360, 378, 380, 392, 399, 405, 420, 441, 456, 490, 504, 513, 532, 540, 567, 570, 588, 630, 648, 665, 684, 686, 735, 756, 760, 798, 810, 840, 855, 882, 931, 945, 980, 1026, 1029, 1064, 1080, 1134, 1140, 1176, 1197, 1260, 1323, 1330, 1368, 1372, 1470, 1512, 1539, 1596, 1620, 1710, 1715, 1764, 1862, 1890, 1960, 1995, 2052, 2058, 2205, 2268, 2280, 2394, 2520, 2565, 2646, 2660, 2744, 2793, 2835, 2940, 3078, 3087, 3192, 3240, 3420, 3430, 3528, 3591, 3724, 3780, 3969, 3990, 4104, 4116, 4410, 4536, 4655, 4788, 5130, 5145, 5292, 5320, 5586, 5670, 5880, 5985, 6156, 6174, 6517, 6615, 6840, 6860, 7182, 7448, 7560, 7695, 7938, 7980, 8232, 8379, 8820, 9261, 9310, 9576, 10260, 10290, 10584, 10773, 11172, 11340, 11970, 12312, 12348, 13034, 13230, 13720, 13965, 14364, 15390, 15435, 15876, 15960, 16758, 17640, 17955, 18522, 18620, 19551, 19845, 20520, 20580, 21546, 22344, 22680, 23940, 24696, 25137, 26068, 26460, 27783, 27930, 28728, 30780, 30870, 31752, 32585, 33516, 35910, 37044, 37240, 39102, 39690, 41160, 41895, 43092, 46305, 47880, 50274, 52136, 52920, 53865, 55566, 55860, 58653, 61560, 61740, 65170, 67032, 71820, 74088, 75411, 78204, 79380, 83790, 86184, 92610, 97755, 100548, 107730, 111132, 111720, 117306, 123480, 125685, 130340, 138915, 143640, 150822, 156408, 158760, 167580, 175959, 185220, 195510, 201096, 215460, 222264, 234612, 251370, 260680, 277830, 293265, 301644, 335160, 351918, 370440, 377055, 391020, 430920, 469224, 502740, 527877, 555660, 586530, 603288, 703836, 754110, 782040, 879795, 1005480, 1055754, 1111320, 1173060, 1407672, 1508220, 1759590, 2111508, 2346120, 2639385, 3016440, 3519180, 4223016, 5278770, 7038360, 10557540, 21115080]

約数ペア:

[(1, 21115080), (2, 10557540), (3, 7038360), (4, 5278770), (5, 4223016), (6, 3519180), (7, 3016440), (8, 2639385), (9, 2346120), (10, 2111508), (12, 1759590), (14, 1508220), (15, 1407672), (18, 1173060), (19, 1111320), (20, 1055754), (21, 1005480), (24, 879795), (27, 782040), (28, 754110), (30, 703836), (35, 603288), (36, 586530), (38, 555660), (40, 527877), (42, 502740), (45, 469224), (49, 430920), (54, 391020), (56, 377055), (57, 370440), (60, 351918), (63, 335160), (70, 301644), (72, 293265), (76, 277830), (81, 260680), (84, 251370), (90, 234612), (95, 222264), (98, 215460), (105, 201096), (108, 195510), (114, 185220), (120, 175959), (126, 167580), (133, 158760), (135, 156408), (140, 150822), (147, 143640), (152, 138915), (162, 130340), (168, 125685), (171, 123480), (180, 117306), (189, 111720), (190, 111132), (196, 107730), (210, 100548), (216, 97755), (228, 92610), (245, 86184), (252, 83790), (266, 79380), (270, 78204), (280, 75411), (285, 74088), (294, 71820), (315, 67032), (324, 65170), (342, 61740), (343, 61560), (360, 58653), (378, 55860), (380, 55566), (392, 53865), (399, 52920), (405, 52136), (420, 50274), (441, 47880), (456, 46305), (490, 43092), (504, 41895), (513, 41160), (532, 39690), (540, 39102), (567, 37240), (570, 37044), (588, 35910), (630, 33516), (648, 32585), (665, 31752), (684, 30870), (686, 30780), (735, 28728), (756, 27930), (760, 27783), (798, 26460), (810, 26068), (840, 25137), (855, 24696), (882, 23940), (931, 22680), (945, 22344), (980, 21546), (1026, 20580), (1029, 20520), (1064, 19845), (1080, 19551), (1134, 18620), (1140, 18522), (1176, 17955), (1197, 17640), (1260, 16758), (1323, 15960), (1330, 15876), (1368, 15435), (1372, 15390), (1470, 14364), (1512, 13965), (1539, 13720), (1596, 13230), (1620, 13034), (1710, 12348), (1715, 12312), (1764, 11970), (1862, 11340), (1890, 11172), (1960, 10773), (1995, 10584), (2052, 10290), (2058, 10260), (2205, 9576), (2268, 9310), (2280, 9261), (2394, 8820), (2520, 8379), (2565, 8232), (2646, 7980), (2660, 7938), (2744, 7695), (2793, 7560), (2835, 7448), (2940, 7182), (3078, 6860), (3087, 6840), (3192, 6615), (3240, 6517), (3420, 6174), (3430, 6156), (3528, 5985), (3591, 5880), (3724, 5670), (3780, 5586), (3969, 5320), (3990, 5292), (4104, 5145), (4116, 5130), (4410, 4788), (4536, 4655)]