20967489

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 31210920

約数和(自身を除く): 10243431

約数列:

[1, 3, 9, 53, 113, 159, 339, 389, 477, 1017, 1167, 3501, 5989, 17967, 20617, 43957, 53901, 61851, 131871, 185553, 395613, 2329721, 6989163, 20967489]

約数ペア:

[(1, 20967489), (3, 6989163), (9, 2329721), (53, 395613), (113, 185553), (159, 131871), (339, 61851), (389, 53901), (477, 43957), (1017, 20617), (1167, 17967), (3501, 5989)]