20700785

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4447}}^1$

素因数の和:4485

約数の個数: 24

約数和(自身を含む): 30424320

約数和(自身を除く): 9723535

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4447, 4655, 22235, 31129, 84493, 155645, 217903, 422465, 591451, 1089515, 2957255, 4140157, 20700785]

約数ペア:

[(1, 20700785), (5, 4140157), (7, 2957255), (19, 1089515), (35, 591451), (49, 422465), (95, 217903), (133, 155645), (245, 84493), (665, 31129), (931, 22235), (4447, 4655)]