18917072

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{28837}}^1$

素因数の和:28886

約数の個数: 20

約数和(自身を含む): 37547076

約数和(自身を除く): 18630004

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 28837, 57674, 115348, 230696, 461392, 1182317, 2364634, 4729268, 9458536, 18917072]

約数ペア:

[(1, 18917072), (2, 9458536), (4, 4729268), (8, 2364634), (16, 1182317), (41, 461392), (82, 230696), (164, 115348), (328, 57674), (656, 28837)]