20157718

素因数分解:

$2^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1997}}^1$

素因数の和:2116

約数の個数: 24

約数和(自身を含む): 35532432

約数和(自身を除く): 15374714

約数列:

[1, 2, 7, 14, 49, 98, 103, 206, 721, 1442, 1997, 3994, 5047, 10094, 13979, 27958, 97853, 195706, 205691, 411382, 1439837, 2879674, 10078859, 20157718]

約数ペア:

[(1, 20157718), (2, 10078859), (7, 2879674), (14, 1439837), (49, 411382), (98, 205691), (103, 195706), (206, 97853), (721, 27958), (1442, 13979), (1997, 10094), (3994, 5047)]