21425848

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157543}}^1$

素因数の和:157566

約数の個数: 16

約数和(自身を含む): 42536880

約数和(自身を除く): 21111032

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157543, 315086, 630172, 1260344, 2678231, 5356462, 10712924, 21425848]

約数ペア:

[(1, 21425848), (2, 10712924), (4, 5356462), (8, 2678231), (17, 1260344), (34, 630172), (68, 315086), (136, 157543)]