21568280

素因数分解:

$2^3\times 5^1\times {\mathrm{539207}}^1$

素因数の和:539218

約数の個数: 16

約数和(自身を含む): 48528720

約数和(自身を除く): 26960440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539207, 1078414, 2156828, 2696035, 4313656, 5392070, 10784140, 21568280]

約数ペア:

[(1, 21568280), (2, 10784140), (4, 5392070), (5, 4313656), (8, 2696035), (10, 2156828), (20, 1078414), (40, 539207)]