20509923

素因数分解:

$3^1\times 7^1\times {\mathrm{607}}^1\times {\mathrm{1609}}^1$

素因数の和:2226

約数の個数: 16

約数和(自身を含む): 31324160

約数和(自身を除く): 10814237

約数列:

[1, 3, 7, 21, 607, 1609, 1821, 4249, 4827, 11263, 12747, 33789, 976663, 2929989, 6836641, 20509923]

約数ペア:

[(1, 20509923), (3, 6836641), (7, 2929989), (21, 976663), (607, 33789), (1609, 12747), (1821, 11263), (4249, 4827)]