21899410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168457}}^1$

素因数の和:168477

約数の個数: 16

約数和(自身を含む): 42451416

約数和(自身を除く): 20552006

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168457, 336914, 842285, 1684570, 2189941, 4379882, 10949705, 21899410]

約数ペア:

[(1, 21899410), (2, 10949705), (5, 4379882), (10, 2189941), (13, 1684570), (26, 842285), (65, 336914), (130, 168457)]