19995759

素因数分解:

$3^2\times 7^1\times {\mathrm{503}}^1\times {\mathrm{631}}^1$

素因数の和:1147

約数の個数: 24

約数和(自身を含む): 33126912

約数和(自身を除く): 13131153

約数列:

[1, 3, 7, 9, 21, 63, 503, 631, 1509, 1893, 3521, 4417, 4527, 5679, 10563, 13251, 31689, 39753, 317393, 952179, 2221751, 2856537, 6665253, 19995759]

約数ペア:

[(1, 19995759), (3, 6665253), (7, 2856537), (9, 2221751), (21, 952179), (63, 317393), (503, 39753), (631, 31689), (1509, 13251), (1893, 10563), (3521, 5679), (4417, 4527)]