20388478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{11731}}^1$

素因数の和:11823

約数の個数: 16

約数和(自身を含む): 33788160

約数和(自身を除く): 13399682

約数列:

[1, 2, 11, 22, 79, 158, 869, 1738, 11731, 23462, 129041, 258082, 926749, 1853498, 10194239, 20388478]

約数ペア:

[(1, 20388478), (2, 10194239), (11, 1853498), (22, 926749), (79, 258082), (158, 129041), (869, 23462), (1738, 11731)]