20916988

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{1789}}^1$

素因数の和:1909

約数の個数: 24

約数和(自身を含む): 38091200

約数和(自身を除く): 17174212

約数列:

[1, 2, 4, 37, 74, 79, 148, 158, 316, 1789, 2923, 3578, 5846, 7156, 11692, 66193, 132386, 141331, 264772, 282662, 565324, 5229247, 10458494, 20916988]

約数ペア:

[(1, 20916988), (2, 10458494), (4, 5229247), (37, 565324), (74, 282662), (79, 264772), (148, 141331), (158, 132386), (316, 66193), (1789, 11692), (2923, 7156), (3578, 5846)]