21330985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3067}}^1$

素因数の和:3192

約数の個数: 16

約数和(自身を含む): 27832896

約数和(自身を除く): 6501911

約数列:

[1, 5, 13, 65, 107, 535, 1391, 3067, 6955, 15335, 39871, 199355, 328169, 1640845, 4266197, 21330985]

約数ペア:

[(1, 21330985), (5, 4266197), (13, 1640845), (65, 328169), (107, 199355), (535, 39871), (1391, 15335), (3067, 6955)]