20287905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{122957}}^1$

素因数の和:122976

約数の個数: 16

約数和(自身を含む): 35411904

約数和(自身を除く): 15123999

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 122957, 368871, 614785, 1352527, 1844355, 4057581, 6762635, 20287905]

約数ペア:

[(1, 20287905), (3, 6762635), (5, 4057581), (11, 1844355), (15, 1352527), (33, 614785), (55, 368871), (165, 122957)]