21200680

素因数分解:

$2^3\times 5^1\times {\mathrm{530017}}^1$

素因数の和:530028

約数の個数: 16

約数和(自身を含む): 47701620

約数和(自身を除く): 26500940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 530017, 1060034, 2120068, 2650085, 4240136, 5300170, 10600340, 21200680]

約数ペア:

[(1, 21200680), (2, 10600340), (4, 5300170), (5, 4240136), (8, 2650085), (10, 2120068), (20, 1060034), (40, 530017)]