19888440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:118

約数の個数: 256

約数和(自身を含む): 74995200

約数和(自身を除く): 55106760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 19, 20, 22, 24, 26, 30, 33, 38, 39, 40, 44, 52, 55, 57, 60, 61, 65, 66, 76, 78, 88, 95, 104, 110, 114, 120, 122, 130, 132, 143, 152, 156, 165, 183, 190, 195, 209, 220, 228, 244, 247, 260, 264, 285, 286, 305, 312, 330, 366, 380, 390, 418, 429, 440, 456, 488, 494, 520, 570, 572, 610, 627, 660, 671, 715, 732, 741, 760, 780, 793, 836, 858, 915, 988, 1045, 1140, 1144, 1159, 1220, 1235, 1254, 1320, 1342, 1430, 1464, 1482, 1560, 1586, 1672, 1716, 1830, 1976, 2013, 2090, 2145, 2280, 2318, 2379, 2440, 2470, 2508, 2684, 2717, 2860, 2964, 3135, 3172, 3355, 3432, 3477, 3660, 3705, 3965, 4026, 4180, 4290, 4636, 4758, 4940, 5016, 5368, 5434, 5720, 5795, 5928, 6270, 6344, 6710, 6954, 7320, 7410, 7930, 8052, 8151, 8360, 8580, 8723, 9272, 9516, 9880, 10065, 10868, 11590, 11895, 12540, 12749, 13420, 13585, 13908, 14820, 15067, 15860, 16104, 16302, 17160, 17385, 17446, 19032, 20130, 21736, 23180, 23790, 25080, 25498, 26169, 26840, 27170, 27816, 29640, 30134, 31720, 32604, 34770, 34892, 38247, 40260, 40755, 43615, 45201, 46360, 47580, 50996, 52338, 54340, 60268, 63745, 65208, 69540, 69784, 75335, 76494, 80520, 81510, 87230, 90402, 95160, 101992, 104676, 108680, 120536, 127490, 130845, 139080, 150670, 152988, 163020, 165737, 174460, 180804, 191235, 209352, 226005, 254980, 261690, 301340, 305976, 326040, 331474, 348920, 361608, 382470, 452010, 497211, 509960, 523380, 602680, 662948, 764940, 828685, 904020, 994422, 1046760, 1325896, 1529880, 1657370, 1808040, 1988844, 2486055, 3314740, 3977688, 4972110, 6629480, 9944220, 19888440]

約数ペア:

[(1, 19888440), (2, 9944220), (3, 6629480), (4, 4972110), (5, 3977688), (6, 3314740), (8, 2486055), (10, 1988844), (11, 1808040), (12, 1657370), (13, 1529880), (15, 1325896), (19, 1046760), (20, 994422), (22, 904020), (24, 828685), (26, 764940), (30, 662948), (33, 602680), (38, 523380), (39, 509960), (40, 497211), (44, 452010), (52, 382470), (55, 361608), (57, 348920), (60, 331474), (61, 326040), (65, 305976), (66, 301340), (76, 261690), (78, 254980), (88, 226005), (95, 209352), (104, 191235), (110, 180804), (114, 174460), (120, 165737), (122, 163020), (130, 152988), (132, 150670), (143, 139080), (152, 130845), (156, 127490), (165, 120536), (183, 108680), (190, 104676), (195, 101992), (209, 95160), (220, 90402), (228, 87230), (244, 81510), (247, 80520), (260, 76494), (264, 75335), (285, 69784), (286, 69540), (305, 65208), (312, 63745), (330, 60268), (366, 54340), (380, 52338), (390, 50996), (418, 47580), (429, 46360), (440, 45201), (456, 43615), (488, 40755), (494, 40260), (520, 38247), (570, 34892), (572, 34770), (610, 32604), (627, 31720), (660, 30134), (671, 29640), (715, 27816), (732, 27170), (741, 26840), (760, 26169), (780, 25498), (793, 25080), (836, 23790), (858, 23180), (915, 21736), (988, 20130), (1045, 19032), (1140, 17446), (1144, 17385), (1159, 17160), (1220, 16302), (1235, 16104), (1254, 15860), (1320, 15067), (1342, 14820), (1430, 13908), (1464, 13585), (1482, 13420), (1560, 12749), (1586, 12540), (1672, 11895), (1716, 11590), (1830, 10868), (1976, 10065), (2013, 9880), (2090, 9516), (2145, 9272), (2280, 8723), (2318, 8580), (2379, 8360), (2440, 8151), (2470, 8052), (2508, 7930), (2684, 7410), (2717, 7320), (2860, 6954), (2964, 6710), (3135, 6344), (3172, 6270), (3355, 5928), (3432, 5795), (3477, 5720), (3660, 5434), (3705, 5368), (3965, 5016), (4026, 4940), (4180, 4758), (4290, 4636)]