21572920

素因数分解:

$2^3\times 5^1\times {\mathrm{539323}}^1$

素因数の和:539334

約数の個数: 16

約数和(自身を含む): 48539160

約数和(自身を除く): 26966240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539323, 1078646, 2157292, 2696615, 4314584, 5393230, 10786460, 21572920]

約数ペア:

[(1, 21572920), (2, 10786460), (4, 5393230), (5, 4314584), (8, 2696615), (10, 2157292), (20, 1078646), (40, 539323)]