20880638

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{521}}^1\times {\mathrm{691}}^1$

素因数の和:1243

約数の個数: 16

約数和(自身を含む): 32510160

約数和(自身を除く): 11629522

約数列:

[1, 2, 29, 58, 521, 691, 1042, 1382, 15109, 20039, 30218, 40078, 360011, 720022, 10440319, 20880638]

約数ペア:

[(1, 20880638), (2, 10440319), (29, 720022), (58, 360011), (521, 40078), (691, 30218), (1042, 20039), (1382, 15109)]