20178785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2027}}^1$

素因数の和:2224

約数の個数: 16

約数和(自身を含む): 26574912

約数和(自身を除く): 6396127

約数列:

[1, 5, 11, 55, 181, 905, 1991, 2027, 9955, 10135, 22297, 111485, 366887, 1834435, 4035757, 20178785]

約数ペア:

[(1, 20178785), (5, 4035757), (11, 1834435), (55, 366887), (181, 111485), (905, 22297), (1991, 10135), (2027, 9955)]