17986040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10457}}^1$

素因数の和:10511

約数の個数: 32

約数和(自身を含む): 41413680

約数和(自身を除く): 23427640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10457, 20914, 41828, 52285, 83656, 104570, 209140, 418280, 449651, 899302, 1798604, 2248255, 3597208, 4496510, 8993020, 17986040]

約数ペア:

[(1, 17986040), (2, 8993020), (4, 4496510), (5, 3597208), (8, 2248255), (10, 1798604), (20, 899302), (40, 449651), (43, 418280), (86, 209140), (172, 104570), (215, 83656), (344, 52285), (430, 41828), (860, 20914), (1720, 10457)]