18721222

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{2657}}^1$

素因数の和:2943

約数の個数: 16

約数和(自身を含む): 30364992

約数和(自身を除く): 11643770

約数列:

[1, 2, 13, 26, 271, 542, 2657, 3523, 5314, 7046, 34541, 69082, 720047, 1440094, 9360611, 18721222]

約数ペア:

[(1, 18721222), (2, 9360611), (13, 1440094), (26, 720047), (271, 69082), (542, 34541), (2657, 7046), (3523, 5314)]