638888913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{30169}}^1$

素因数の和:30369

約数の個数: 24

約数和(自身を含む): 999351080

約数和(自身を除く): 360462167

約数列:

[1, 3, 9, 13, 39, 117, 181, 543, 1629, 2353, 7059, 21177, 30169, 90507, 271521, 392197, 1176591, 3529773, 5460589, 16381767, 49145301, 70987657, 212962971, 638888913]

約数ペア:

[(1, 638888913), (3, 212962971), (9, 70987657), (13, 49145301), (39, 16381767), (117, 5460589), (181, 3529773), (543, 1176591), (1629, 392197), (2353, 271521), (7059, 90507), (21177, 30169)]