20647953

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{2741}}^1$

素因数の和:2787

約数の個数: 24

約数和(自身を含む): 31938816

約数和(自身を除く): 11290863

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 837, 2511, 2741, 7533, 8223, 24669, 74007, 84971, 222021, 254913, 666063, 764739, 2294217, 6882651, 20647953]

約数ペア:

[(1, 20647953), (3, 6882651), (9, 2294217), (27, 764739), (31, 666063), (81, 254913), (93, 222021), (243, 84971), (279, 74007), (837, 24669), (2511, 8223), (2741, 7533)]