21656241

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6521}}^1$

素因数の和:6574

約数の個数: 20

約数和(自身を含む): 33144804

約数和(自身を除く): 11488563

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6521, 19563, 58689, 176067, 267361, 528201, 802083, 2406249, 7218747, 21656241]

約数ペア:

[(1, 21656241), (3, 7218747), (9, 2406249), (27, 802083), (41, 528201), (81, 267361), (123, 176067), (369, 58689), (1107, 19563), (3321, 6521)]