20156194925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{21013}}^1$

素因数の和:21138

約数の個数: 48

約数和(自身を含む): 27626013072

約数和(自身を除く): 7469818147

約数列:

[1, 5, 17, 25, 37, 61, 85, 185, 305, 425, 629, 925, 1037, 1525, 2257, 3145, 5185, 11285, 15725, 21013, 25925, 38369, 56425, 105065, 191845, 357221, 525325, 777481, 959225, 1281793, 1786105, 3887405, 6408965, 8930525, 13217177, 19437025, 21790481, 32044825, 47426341, 66085885, 108952405, 237131705, 330429425, 544762025, 806247797, 1185658525, 4031238985, 20156194925]

約数ペア:

[(1, 20156194925), (5, 4031238985), (17, 1185658525), (25, 806247797), (37, 544762025), (61, 330429425), (85, 237131705), (185, 108952405), (305, 66085885), (425, 47426341), (629, 32044825), (925, 21790481), (1037, 19437025), (1525, 13217177), (2257, 8930525), (3145, 6408965), (5185, 3887405), (11285, 1786105), (15725, 1281793), (21013, 959225), (25925, 777481), (38369, 525325), (56425, 357221), (105065, 191845)]