21641425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3917}}^1$

素因数の和:3957

約数の個数: 24

約数和(自身を含む): 30607416

約数和(自身を除く): 8965991

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3917, 5525, 19585, 50921, 66589, 97925, 254605, 332945, 865657, 1273025, 1664725, 4328285, 21641425]

約数ペア:

[(1, 21641425), (5, 4328285), (13, 1664725), (17, 1273025), (25, 865657), (65, 332945), (85, 254605), (221, 97925), (325, 66589), (425, 50921), (1105, 19585), (3917, 5525)]