21778227

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{859}}^1$

素因数の和:1184

約数の個数: 20

約数和(自身を含む): 32674840

約数和(自身を除く): 10896613

約数列:

[1, 3, 9, 27, 81, 313, 859, 939, 2577, 2817, 7731, 8451, 23193, 25353, 69579, 268867, 806601, 2419803, 7259409, 21778227]

約数ペア:

[(1, 21778227), (3, 7259409), (9, 2419803), (27, 806601), (81, 268867), (313, 69579), (859, 25353), (939, 23193), (2577, 8451), (2817, 7731)]