218681815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{172871}}^1$

素因数の和:172910

約数の個数: 16

約数和(自身を含む): 298722816

約数和(自身を除く): 80041001

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 172871, 864355, 1901581, 3976033, 9507905, 19880165, 43736363, 218681815]

約数ペア:

[(1, 218681815), (5, 43736363), (11, 19880165), (23, 9507905), (55, 3976033), (115, 1901581), (253, 864355), (1265, 172871)]