20581221

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{1123}}^1$

素因数の和:1316

約数の個数: 16

約数和(自身を含む): 28324800

約数和(自身を除く): 7743579

約数列:

[1, 3, 41, 123, 149, 447, 1123, 3369, 6109, 18327, 46043, 138129, 167327, 501981, 6860407, 20581221]

約数ペア:

[(1, 20581221), (3, 6860407), (41, 501981), (123, 167327), (149, 138129), (447, 46043), (1123, 18327), (3369, 6109)]