20878218

素因数分解:

$2^1\times 3^2\times {\mathrm{1159901}}^1$

素因数の和:1159909

約数の個数: 12

約数和(自身を含む): 45236178

約数和(自身を除く): 24357960

約数列:

[1, 2, 3, 6, 9, 18, 1159901, 2319802, 3479703, 6959406, 10439109, 20878218]

約数ペア:

[(1, 20878218), (2, 10439109), (3, 6959406), (6, 3479703), (9, 2319802), (18, 1159901)]