20651985

素因数分解:

$3^2\times 5^1\times {\mathrm{547}}^1\times {\mathrm{839}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 35904960

約数和(自身を除く): 15252975

約数列:

[1, 3, 5, 9, 15, 45, 547, 839, 1641, 2517, 2735, 4195, 4923, 7551, 8205, 12585, 24615, 37755, 458933, 1376799, 2294665, 4130397, 6883995, 20651985]

約数ペア:

[(1, 20651985), (3, 6883995), (5, 4130397), (9, 2294665), (15, 1376799), (45, 458933), (547, 37755), (839, 24615), (1641, 12585), (2517, 8205), (2735, 7551), (4195, 4923)]