20903475

素因数分解:

$3^1\times 5^2\times {\mathrm{109}}^1\times {\mathrm{2557}}^1$

素因数の和:2679

約数の個数: 24

約数和(自身を含む): 34891120

約数和(自身を除く): 13987645

約数列:

[1, 3, 5, 15, 25, 75, 109, 327, 545, 1635, 2557, 2725, 7671, 8175, 12785, 38355, 63925, 191775, 278713, 836139, 1393565, 4180695, 6967825, 20903475]

約数ペア:

[(1, 20903475), (3, 6967825), (5, 4180695), (15, 1393565), (25, 836139), (75, 278713), (109, 191775), (327, 63925), (545, 38355), (1635, 12785), (2557, 8175), (2725, 7671)]