19839856

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28837}}^1$

素因数の和:28888

約数の個数: 20

約数和(自身を含む): 39335032

約数和(自身を除く): 19495176

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28837, 57674, 115348, 230696, 461392, 1239991, 2479982, 4959964, 9919928, 19839856]

約数ペア:

[(1, 19839856), (2, 9919928), (4, 4959964), (8, 2479982), (16, 1239991), (43, 461392), (86, 230696), (172, 115348), (344, 57674), (688, 28837)]