18659540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{54881}}^1$

素因数の和:54907

約数の個数: 24

約数和(自身を含む): 41490792

約数和(自身を除く): 22831252

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 54881, 109762, 219524, 274405, 548810, 932977, 1097620, 1865954, 3731908, 4664885, 9329770, 18659540]

約数ペア:

[(1, 18659540), (2, 9329770), (4, 4664885), (5, 3731908), (10, 1865954), (17, 1097620), (20, 932977), (34, 548810), (68, 274405), (85, 219524), (170, 109762), (340, 54881)]