20996475

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3943}}^1$

素因数の和:4027

約数の個数: 24

約数和(自身を含む): 35212032

約数和(自身を除く): 14215557

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3943, 5325, 11829, 19715, 59145, 98575, 279953, 295725, 839859, 1399765, 4199295, 6998825, 20996475]

約数ペア:

[(1, 20996475), (3, 6998825), (5, 4199295), (15, 1399765), (25, 839859), (71, 295725), (75, 279953), (213, 98575), (355, 59145), (1065, 19715), (1775, 11829), (3943, 5325)]