12721525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 17175240

約数和(自身を除く): 4453715

約数列:

[1, 5, 17, 25, 37, 85, 185, 425, 629, 809, 925, 3145, 4045, 13753, 15725, 20225, 29933, 68765, 149665, 343825, 508861, 748325, 2544305, 12721525]

約数ペア:

[(1, 12721525), (5, 2544305), (17, 748325), (25, 508861), (37, 343825), (85, 149665), (185, 68765), (425, 29933), (629, 20225), (809, 15725), (925, 13753), (3145, 4045)]