20704255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1259}}^1$

素因数の和:1311

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9777665

約数列:

[1, 5, 11, 13, 23, 55, 65, 115, 143, 253, 299, 715, 1259, 1265, 1495, 3289, 6295, 13849, 16367, 16445, 28957, 69245, 81835, 144785, 180037, 318527, 376441, 900185, 1592635, 1882205, 4140851, 20704255]

約数ペア:

[(1, 20704255), (5, 4140851), (11, 1882205), (13, 1592635), (23, 900185), (55, 376441), (65, 318527), (115, 180037), (143, 144785), (253, 81835), (299, 69245), (715, 28957), (1259, 16445), (1265, 16367), (1495, 13849), (3289, 6295)]