21236559

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 28815360

約数和(自身を除く): 7578801

約数列:

[1, 3, 127, 139, 381, 401, 417, 1203, 17653, 50927, 52959, 55739, 152781, 167217, 7078853, 21236559]

約数ペア:

[(1, 21236559), (3, 7078853), (127, 167217), (139, 152781), (381, 55739), (401, 52959), (417, 50927), (1203, 17653)]