20917818

素因数分解:

$2^1\times 3^3\times {\mathrm{131}}^1\times {\mathrm{2957}}^1$

素因数の和:3099

約数の個数: 32

約数和(自身を含む): 46854720

約数和(自身を除く): 25936902

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 131, 262, 393, 786, 1179, 2358, 2957, 3537, 5914, 7074, 8871, 17742, 26613, 53226, 79839, 159678, 387367, 774734, 1162101, 2324202, 3486303, 6972606, 10458909, 20917818]

約数ペア:

[(1, 20917818), (2, 10458909), (3, 6972606), (6, 3486303), (9, 2324202), (18, 1162101), (27, 774734), (54, 387367), (131, 159678), (262, 79839), (393, 53226), (786, 26613), (1179, 17742), (2358, 8871), (2957, 7074), (3537, 5914)]