21038375

素因数分解:

$5^3\times {\mathrm{47}}^1\times {\mathrm{3581}}^1$

素因数の和:3643

約数の個数: 16

約数和(自身を含む): 26822016

約数和(自身を除く): 5783641

約数列:

[1, 5, 25, 47, 125, 235, 1175, 3581, 5875, 17905, 89525, 168307, 447625, 841535, 4207675, 21038375]

約数ペア:

[(1, 21038375), (5, 4207675), (25, 841535), (47, 447625), (125, 168307), (235, 89525), (1175, 17905), (3581, 5875)]