18973947

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2539}}^1$

素因数の和:2642

約数の個数: 16

約数和(自身を含む): 26334720

約数和(自身を除く): 7360773

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2539, 7473, 7617, 119333, 134567, 357999, 403701, 6324649, 18973947]

約数ペア:

[(1, 18973947), (3, 6324649), (47, 403701), (53, 357999), (141, 134567), (159, 119333), (2491, 7617), (2539, 7473)]