20518408

素因数分解:

$2^3\times {\mathrm{349}}^1\times {\mathrm{7349}}^1$

素因数の和:7704

約数の個数: 16

約数和(自身を含む): 38587500

約数和(自身を除く): 18069092

約数列:

[1, 2, 4, 8, 349, 698, 1396, 2792, 7349, 14698, 29396, 58792, 2564801, 5129602, 10259204, 20518408]

約数ペア:

[(1, 20518408), (2, 10259204), (4, 5129602), (8, 2564801), (349, 58792), (698, 29396), (1396, 14698), (2792, 7349)]