21217560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:130

約数の個数: 256

約数和(自身を含む): 82252800

約数和(自身を除く): 61035240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 29, 30, 35, 39, 40, 42, 52, 56, 58, 60, 65, 67, 70, 78, 84, 87, 91, 104, 105, 116, 120, 130, 134, 140, 145, 156, 168, 174, 182, 195, 201, 203, 210, 232, 260, 268, 273, 280, 290, 312, 335, 348, 364, 377, 390, 402, 406, 420, 435, 455, 469, 520, 536, 546, 580, 609, 670, 696, 728, 754, 780, 804, 812, 840, 870, 871, 910, 938, 1005, 1015, 1092, 1131, 1160, 1218, 1340, 1365, 1407, 1508, 1560, 1608, 1624, 1740, 1742, 1820, 1876, 1885, 1943, 2010, 2030, 2184, 2262, 2345, 2436, 2613, 2639, 2680, 2730, 2814, 3016, 3045, 3480, 3484, 3640, 3752, 3770, 3886, 4020, 4060, 4355, 4524, 4690, 4872, 5226, 5278, 5460, 5628, 5655, 5829, 6090, 6097, 6968, 7035, 7540, 7772, 7917, 8040, 8120, 8710, 9048, 9380, 9715, 10452, 10556, 10920, 11256, 11310, 11658, 12180, 12194, 13065, 13195, 13601, 14070, 15080, 15544, 15834, 17420, 18291, 18760, 19430, 20904, 21112, 22620, 23316, 24360, 24388, 25259, 26130, 26390, 27202, 28140, 29145, 30485, 31668, 34840, 36582, 38860, 39585, 40803, 45240, 46632, 48776, 50518, 52260, 52780, 54404, 56280, 58290, 60970, 63336, 68005, 73164, 75777, 77720, 79170, 81606, 91455, 101036, 104520, 105560, 108808, 116580, 121940, 126295, 136010, 146328, 151554, 158340, 163212, 176813, 182910, 202072, 204015, 233160, 243880, 252590, 272020, 303108, 316680, 326424, 353626, 365820, 378885, 408030, 505180, 530439, 544040, 606216, 707252, 731640, 757770, 816060, 884065, 1010360, 1060878, 1414504, 1515540, 1632120, 1768130, 2121756, 2652195, 3031080, 3536260, 4243512, 5304390, 7072520, 10608780, 21217560]

約数ペア:

[(1, 21217560), (2, 10608780), (3, 7072520), (4, 5304390), (5, 4243512), (6, 3536260), (7, 3031080), (8, 2652195), (10, 2121756), (12, 1768130), (13, 1632120), (14, 1515540), (15, 1414504), (20, 1060878), (21, 1010360), (24, 884065), (26, 816060), (28, 757770), (29, 731640), (30, 707252), (35, 606216), (39, 544040), (40, 530439), (42, 505180), (52, 408030), (56, 378885), (58, 365820), (60, 353626), (65, 326424), (67, 316680), (70, 303108), (78, 272020), (84, 252590), (87, 243880), (91, 233160), (104, 204015), (105, 202072), (116, 182910), (120, 176813), (130, 163212), (134, 158340), (140, 151554), (145, 146328), (156, 136010), (168, 126295), (174, 121940), (182, 116580), (195, 108808), (201, 105560), (203, 104520), (210, 101036), (232, 91455), (260, 81606), (268, 79170), (273, 77720), (280, 75777), (290, 73164), (312, 68005), (335, 63336), (348, 60970), (364, 58290), (377, 56280), (390, 54404), (402, 52780), (406, 52260), (420, 50518), (435, 48776), (455, 46632), (469, 45240), (520, 40803), (536, 39585), (546, 38860), (580, 36582), (609, 34840), (670, 31668), (696, 30485), (728, 29145), (754, 28140), (780, 27202), (804, 26390), (812, 26130), (840, 25259), (870, 24388), (871, 24360), (910, 23316), (938, 22620), (1005, 21112), (1015, 20904), (1092, 19430), (1131, 18760), (1160, 18291), (1218, 17420), (1340, 15834), (1365, 15544), (1407, 15080), (1508, 14070), (1560, 13601), (1608, 13195), (1624, 13065), (1740, 12194), (1742, 12180), (1820, 11658), (1876, 11310), (1885, 11256), (1943, 10920), (2010, 10556), (2030, 10452), (2184, 9715), (2262, 9380), (2345, 9048), (2436, 8710), (2613, 8120), (2639, 8040), (2680, 7917), (2730, 7772), (2814, 7540), (3016, 7035), (3045, 6968), (3480, 6097), (3484, 6090), (3640, 5829), (3752, 5655), (3770, 5628), (3886, 5460), (4020, 5278), (4060, 5226), (4355, 4872), (4524, 4690)]