20661818

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{521}}^1$

素因数の和:853

約数の個数: 16

約数和(自身を含む): 31570560

約数和(自身を除く): 10908742

約数列:

[1, 2, 79, 158, 251, 502, 521, 1042, 19829, 39658, 41159, 82318, 130771, 261542, 10330909, 20661818]

約数ペア:

[(1, 20661818), (2, 10330909), (79, 261542), (158, 130771), (251, 82318), (502, 41159), (521, 39658), (1042, 19829)]