21000971080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{58603}}^1$

素因数の和:58679

約数の個数: 96

約数和(自身を含む): 51815312640

約数和(自身を除く): 30814341560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 289, 310, 340, 527, 578, 620, 680, 1054, 1156, 1240, 1445, 2108, 2312, 2635, 2890, 4216, 5270, 5780, 8959, 10540, 11560, 17918, 21080, 35836, 44795, 58603, 71672, 89590, 117206, 179180, 234412, 293015, 358360, 468824, 586030, 996251, 1172060, 1816693, 1992502, 2344120, 3633386, 3985004, 4981255, 7266772, 7970008, 9083465, 9962510, 14533544, 16936267, 18166930, 19925020, 30883781, 33872534, 36333860, 39850040, 61767562, 67745068, 72667720, 84681335, 123535124, 135490136, 154418905, 169362670, 247070248, 308837810, 338725340, 525024277, 617675620, 677450680, 1050048554, 1235351240, 2100097108, 2625121385, 4200194216, 5250242770, 10500485540, 21000971080]

約数ペア:

[(1, 21000971080), (2, 10500485540), (4, 5250242770), (5, 4200194216), (8, 2625121385), (10, 2100097108), (17, 1235351240), (20, 1050048554), (31, 677450680), (34, 617675620), (40, 525024277), (62, 338725340), (68, 308837810), (85, 247070248), (124, 169362670), (136, 154418905), (155, 135490136), (170, 123535124), (248, 84681335), (289, 72667720), (310, 67745068), (340, 61767562), (527, 39850040), (578, 36333860), (620, 33872534), (680, 30883781), (1054, 19925020), (1156, 18166930), (1240, 16936267), (1445, 14533544), (2108, 9962510), (2312, 9083465), (2635, 7970008), (2890, 7266772), (4216, 4981255), (5270, 3985004), (5780, 3633386), (8959, 2344120), (10540, 1992502), (11560, 1816693), (17918, 1172060), (21080, 996251), (35836, 586030), (44795, 468824), (58603, 358360), (71672, 293015), (89590, 234412), (117206, 179180)]