20018385

素因数分解:

$3^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{673}}^1$

素因数の和:1345

約数の個数: 24

約数和(自身を含む): 34802664

約数和(自身を除く): 14784279

約数列:

[1, 3, 5, 9, 15, 45, 661, 673, 1983, 2019, 3305, 3365, 5949, 6057, 9915, 10095, 29745, 30285, 444853, 1334559, 2224265, 4003677, 6672795, 20018385]

約数ペア:

[(1, 20018385), (3, 6672795), (5, 4003677), (9, 2224265), (15, 1334559), (45, 444853), (661, 30285), (673, 29745), (1983, 10095), (2019, 9915), (3305, 6057), (3365, 5949)]