20181205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2801}}^1$

素因数の和:2948

約数の個数: 16

約数和(自身を含む): 26630208

約数和(自身を除く): 6449003

約数列:

[1, 5, 11, 55, 131, 655, 1441, 2801, 7205, 14005, 30811, 154055, 366931, 1834655, 4036241, 20181205]

約数ペア:

[(1, 20181205), (5, 4036241), (11, 1834655), (55, 366931), (131, 154055), (655, 30811), (1441, 14005), (2801, 7205)]