18990165

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{23887}}^1$

素因数の和:23948

約数の個数: 16

約数和(自身を含む): 30958848

約数和(自身を除く): 11968683

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 23887, 71661, 119435, 358305, 1266011, 3798033, 6330055, 18990165]

約数ペア:

[(1, 18990165), (3, 6330055), (5, 3798033), (15, 1266011), (53, 358305), (159, 119435), (265, 71661), (795, 23887)]