20980791

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1741}}^1$

素因数の和:1863

約数の個数: 24

約数和(自身を含む): 32972576

約数和(自身を除く): 11991785

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1741, 4017, 5223, 12051, 15669, 22633, 67899, 179323, 203697, 537969, 1613907, 2331199, 6993597, 20980791]

約数ペア:

[(1, 20980791), (3, 6993597), (9, 2331199), (13, 1613907), (39, 537969), (103, 203697), (117, 179323), (309, 67899), (927, 22633), (1339, 15669), (1741, 12051), (4017, 5223)]