20651883

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3797}}^1$

素因数の和:3851

約数の個数: 24

約数和(自身を含む): 32905872

約数和(自身を除く): 12253989

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 3797, 5439, 11391, 26579, 79737, 140489, 186053, 421467, 558159, 983423, 2950269, 6883961, 20651883]

約数ペア:

[(1, 20651883), (3, 6883961), (7, 2950269), (21, 983423), (37, 558159), (49, 421467), (111, 186053), (147, 140489), (259, 79737), (777, 26579), (1813, 11391), (3797, 5439)]