21929890

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{5209}}^1$

素因数の和:5637

約数の個数: 16

約数和(自身を含む): 39575160

約数和(自身を除く): 17645270

約数列:

[1, 2, 5, 10, 421, 842, 2105, 4210, 5209, 10418, 26045, 52090, 2192989, 4385978, 10964945, 21929890]

約数ペア:

[(1, 21929890), (2, 10964945), (5, 4385978), (10, 2192989), (421, 52090), (842, 26045), (2105, 10418), (4210, 5209)]