156720417

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{7411}}^1$

素因数の和:7493

約数の個数: 32

約数和(自身を含む): 256158720

約数和(自身を除く): 99438303

約数列:

[1, 3, 7, 19, 21, 53, 57, 133, 159, 371, 399, 1007, 1113, 3021, 7049, 7411, 21147, 22233, 51877, 140809, 155631, 392783, 422427, 985663, 1178349, 2749481, 2956989, 7462877, 8248443, 22388631, 52240139, 156720417]

約数ペア:

[(1, 156720417), (3, 52240139), (7, 22388631), (19, 8248443), (21, 7462877), (53, 2956989), (57, 2749481), (133, 1178349), (159, 985663), (371, 422427), (399, 392783), (1007, 155631), (1113, 140809), (3021, 51877), (7049, 22233), (7411, 21147)]