20117818

素因数分解:

$2^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{2221}}^1$

素因数の和:2877

約数の個数: 16

約数和(自身を含む): 34556544

約数和(自身を除く): 14438726

約数列:

[1, 2, 7, 14, 647, 1294, 2221, 4442, 4529, 9058, 15547, 31094, 1436987, 2873974, 10058909, 20117818]

約数ペア:

[(1, 20117818), (2, 10058909), (7, 2873974), (14, 1436987), (647, 31094), (1294, 15547), (2221, 9058), (4442, 4529)]