201717940

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{23957}}^1$

素因数の和:24387

約数の個数: 24

約数和(自身を含む): 424631592

約数和(自身を除く): 222913652

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 23957, 47914, 95828, 119785, 239570, 479140, 10085897, 20171794, 40343588, 50429485, 100858970, 201717940]

約数ペア:

[(1, 201717940), (2, 100858970), (4, 50429485), (5, 40343588), (10, 20171794), (20, 10085897), (421, 479140), (842, 239570), (1684, 119785), (2105, 95828), (4210, 47914), (8420, 23957)]