21140984

素因数分解:

$2^3\times {\mathrm{239}}^1\times {\mathrm{11057}}^1$

素因数の和:11302

約数の個数: 16

約数和(自身を含む): 39808800

約数和(自身を除く): 18667816

約数列:

[1, 2, 4, 8, 239, 478, 956, 1912, 11057, 22114, 44228, 88456, 2642623, 5285246, 10570492, 21140984]

約数ペア:

[(1, 21140984), (2, 10570492), (4, 5285246), (8, 2642623), (239, 88456), (478, 44228), (956, 22114), (1912, 11057)]