15721812275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:645

約数の個数: 72

約数和(自身を含む): 21615491520

約数和(自身を除く): 5893679245

約数列:

[1, 5, 13, 25, 65, 83, 107, 169, 325, 415, 419, 535, 845, 1079, 1391, 2075, 2095, 2675, 4225, 5395, 5447, 6955, 8881, 10475, 14027, 18083, 26975, 27235, 34775, 34777, 44405, 44833, 70135, 70811, 90415, 115453, 136175, 173885, 222025, 224165, 350675, 354055, 452075, 452101, 577265, 582829, 869425, 1120825, 1500889, 1770275, 2260505, 2886325, 2914145, 3721139, 5877313, 7504445, 7576777, 11302525, 14570725, 18605695, 29386565, 37522225, 37883885, 48374807, 93028475, 146932825, 189419425, 241874035, 628872491, 1209370175, 3144362455, 15721812275]

約数ペア:

[(1, 15721812275), (5, 3144362455), (13, 1209370175), (25, 628872491), (65, 241874035), (83, 189419425), (107, 146932825), (169, 93028475), (325, 48374807), (415, 37883885), (419, 37522225), (535, 29386565), (845, 18605695), (1079, 14570725), (1391, 11302525), (2075, 7576777), (2095, 7504445), (2675, 5877313), (4225, 3721139), (5395, 2914145), (5447, 2886325), (6955, 2260505), (8881, 1770275), (10475, 1500889), (14027, 1120825), (18083, 869425), (26975, 582829), (27235, 577265), (34775, 452101), (34777, 452075), (44405, 354055), (44833, 350675), (70135, 224165), (70811, 222025), (90415, 173885), (115453, 136175)]