21563560

素因数分解:

$2^3\times 5^1\times {\mathrm{539089}}^1$

素因数の和:539100

約数の個数: 16

約数和(自身を含む): 48518100

約数和(自身を除く): 26954540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539089, 1078178, 2156356, 2695445, 4312712, 5390890, 10781780, 21563560]

約数ペア:

[(1, 21563560), (2, 10781780), (4, 5390890), (5, 4312712), (8, 2695445), (10, 2156356), (20, 1078178), (40, 539089)]