21162765

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2647}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 37368576

約数和(自身を除く): 16205811

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2647, 2665, 7941, 7995, 13235, 34411, 39705, 103233, 108527, 172055, 325581, 516165, 542635, 1410851, 1627905, 4232553, 7054255, 21162765]

約数ペア:

[(1, 21162765), (3, 7054255), (5, 4232553), (13, 1627905), (15, 1410851), (39, 542635), (41, 516165), (65, 325581), (123, 172055), (195, 108527), (205, 103233), (533, 39705), (615, 34411), (1599, 13235), (2647, 7995), (2665, 7941)]