220881

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 16

約数和(自身を含む): 321408

約数和(自身を除く): 100527

約数列:

[1, 3, 17, 51, 61, 71, 183, 213, 1037, 1207, 3111, 3621, 4331, 12993, 73627, 220881]

約数ペア:

[(1, 220881), (3, 73627), (17, 12993), (51, 4331), (61, 3621), (71, 3111), (183, 1207), (213, 1037)]