20308040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11807}}^1$

素因数の和:11861

約数の個数: 32

約数和(自身を含む): 46759680

約数和(自身を除く): 26451640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11807, 23614, 47228, 59035, 94456, 118070, 236140, 472280, 507701, 1015402, 2030804, 2538505, 4061608, 5077010, 10154020, 20308040]

約数ペア:

[(1, 20308040), (2, 10154020), (4, 5077010), (5, 4061608), (8, 2538505), (10, 2030804), (20, 1015402), (40, 507701), (43, 472280), (86, 236140), (172, 118070), (215, 94456), (344, 59035), (430, 47228), (860, 23614), (1720, 11807)]