2972879

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{359}}^1$

素因数の和:399

約数の個数: 18

約数和(自身を含む): 3755160

約数和(自身を除く): 782281

約数列:

[1, 7, 13, 49, 91, 169, 359, 637, 1183, 2513, 4667, 8281, 17591, 32669, 60671, 228683, 424697, 2972879]

約数ペア:

[(1, 2972879), (7, 424697), (13, 228683), (49, 60671), (91, 32669), (169, 17591), (359, 8281), (637, 4667), (1183, 2513)]