640666

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{601}}^1$

素因数の和:657

約数の個数: 16

約数和(自身を含む): 1061928

約数和(自身を除く): 421262

約数列:

[1, 2, 13, 26, 41, 82, 533, 601, 1066, 1202, 7813, 15626, 24641, 49282, 320333, 640666]

約数ペア:

[(1, 640666), (2, 320333), (13, 49282), (26, 24641), (41, 15626), (82, 7813), (533, 1202), (601, 1066)]