20408965160

素因数分解:

$2^3\times 5^1\times {\mathrm{510224129}}^1$

素因数の和:510224140

約数の個数: 16

約数和(自身を含む): 45920171700

約数和(自身を除く): 25511206540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510224129, 1020448258, 2040896516, 2551120645, 4081793032, 5102241290, 10204482580, 20408965160]

約数ペア:

[(1, 20408965160), (2, 10204482580), (4, 5102241290), (5, 4081793032), (8, 2551120645), (10, 2040896516), (20, 1020448258), (40, 510224129)]