20847555

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9857}}^1$

素因数の和:9915

約数の個数: 24

約数和(自身を含む): 36908352

約数和(自身を除く): 16060797

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9857, 29571, 49285, 88713, 147855, 443565, 463279, 1389837, 2316395, 4169511, 6949185, 20847555]

約数ペア:

[(1, 20847555), (3, 6949185), (5, 4169511), (9, 2316395), (15, 1389837), (45, 463279), (47, 443565), (141, 147855), (235, 88713), (423, 49285), (705, 29571), (2115, 9857)]