21000201280

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{7477}}^1$

素因数の和:7692

約数の個数: 112

約数和(自身を含む): 51147366336

約数和(自身を除く): 30147165056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 131, 134, 160, 262, 268, 320, 335, 524, 536, 655, 670, 1048, 1072, 1310, 1340, 2096, 2144, 2620, 2680, 4192, 4288, 5240, 5360, 7477, 8384, 8777, 10480, 10720, 14954, 17554, 20960, 21440, 29908, 35108, 37385, 41920, 43885, 59816, 70216, 74770, 87770, 119632, 140432, 149540, 175540, 239264, 280864, 299080, 351080, 478528, 500959, 561728, 598160, 702160, 979487, 1001918, 1196320, 1404320, 1958974, 2003836, 2392640, 2504795, 2808640, 3917948, 4007672, 4897435, 5009590, 7835896, 8015344, 9794870, 10019180, 15671792, 16030688, 19589740, 20038360, 31343584, 32061376, 39179480, 40076720, 62687168, 65625629, 78358960, 80153440, 131251258, 156717920, 160306880, 262502516, 313435840, 328128145, 525005032, 656256290, 1050010064, 1312512580, 2100020128, 2625025160, 4200040256, 5250050320, 10500100640, 21000201280]

約数ペア:

[(1, 21000201280), (2, 10500100640), (4, 5250050320), (5, 4200040256), (8, 2625025160), (10, 2100020128), (16, 1312512580), (20, 1050010064), (32, 656256290), (40, 525005032), (64, 328128145), (67, 313435840), (80, 262502516), (131, 160306880), (134, 156717920), (160, 131251258), (262, 80153440), (268, 78358960), (320, 65625629), (335, 62687168), (524, 40076720), (536, 39179480), (655, 32061376), (670, 31343584), (1048, 20038360), (1072, 19589740), (1310, 16030688), (1340, 15671792), (2096, 10019180), (2144, 9794870), (2620, 8015344), (2680, 7835896), (4192, 5009590), (4288, 4897435), (5240, 4007672), (5360, 3917948), (7477, 2808640), (8384, 2504795), (8777, 2392640), (10480, 2003836), (10720, 1958974), (14954, 1404320), (17554, 1196320), (20960, 1001918), (21440, 979487), (29908, 702160), (35108, 598160), (37385, 561728), (41920, 500959), (43885, 478528), (59816, 351080), (70216, 299080), (74770, 280864), (87770, 239264), (119632, 175540), (140432, 149540)]