18087905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{911}}^1$

素因数の和:965

約数の個数: 24

約数和(自身を含む): 25017984

約数和(自身を除く): 6930079

約数列:

[1, 5, 11, 19, 55, 95, 209, 361, 911, 1045, 1805, 3971, 4555, 10021, 17309, 19855, 50105, 86545, 190399, 328871, 951995, 1644355, 3617581, 18087905]

約数ペア:

[(1, 18087905), (5, 3617581), (11, 1644355), (19, 951995), (55, 328871), (95, 190399), (209, 86545), (361, 50105), (911, 19855), (1045, 17309), (1805, 10021), (3971, 4555)]