20547471

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13781}}^1$

素因数の和:13862

約数の個数: 16

約数和(自身を含む): 31753728

約数和(自身を除く): 11206257

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13781, 41343, 96467, 289401, 978451, 2935353, 6849157, 20547471]

約数ペア:

[(1, 20547471), (3, 6849157), (7, 2935353), (21, 978451), (71, 289401), (213, 96467), (497, 41343), (1491, 13781)]