21042625

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2371}}^1$

素因数の和:2457

約数の個数: 16

約数和(自身を含む): 26642304

約数和(自身を除く): 5599679

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2371, 8875, 11855, 59275, 168341, 296375, 841705, 4208525, 21042625]

約数ペア:

[(1, 21042625), (5, 4208525), (25, 841705), (71, 296375), (125, 168341), (355, 59275), (1775, 11855), (2371, 8875)]