20137663

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{613}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 26200608

約数和(自身を除く): 6062945

約数列:

[1, 7, 13, 19, 91, 133, 247, 361, 613, 1729, 2527, 4291, 4693, 7969, 11647, 32851, 55783, 81529, 151411, 221293, 1059877, 1549051, 2876809, 20137663]

約数ペア:

[(1, 20137663), (7, 2876809), (13, 1549051), (19, 1059877), (91, 221293), (133, 151411), (247, 81529), (361, 55783), (613, 32851), (1729, 11647), (2527, 7969), (4291, 4693)]