20765960

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2287}}^1$

素因数の和:2525

約数の個数: 32

約数和(自身を含む): 46949760

約数和(自身を除く): 26183800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2287, 4540, 4574, 9080, 9148, 11435, 18296, 22870, 45740, 91480, 519149, 1038298, 2076596, 2595745, 4153192, 5191490, 10382980, 20765960]

約数ペア:

[(1, 20765960), (2, 10382980), (4, 5191490), (5, 4153192), (8, 2595745), (10, 2076596), (20, 1038298), (40, 519149), (227, 91480), (454, 45740), (908, 22870), (1135, 18296), (1816, 11435), (2270, 9148), (2287, 9080), (4540, 4574)]