21728421

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{16883}}^1$

素因数の和:16913

約数の個数: 24

約数和(自身を含む): 36874656

約数和(自身を除く): 15146235

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287, 16883, 50649, 151947, 185713, 219479, 557139, 658437, 1671417, 1975311, 2414269, 7242807, 21728421]

約数ペア:

[(1, 21728421), (3, 7242807), (9, 2414269), (11, 1975311), (13, 1671417), (33, 658437), (39, 557139), (99, 219479), (117, 185713), (143, 151947), (429, 50649), (1287, 16883)]