123456985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{17599}}^1$

素因数の和:17688

約数の個数: 16

約数和(自身を含む): 157132800

約数和(自身を除く): 33675815

約数列:

[1, 5, 23, 61, 115, 305, 1403, 7015, 17599, 87995, 404777, 1073539, 2023885, 5367695, 24691397, 123456985]

約数ペア:

[(1, 123456985), (5, 24691397), (23, 5367695), (61, 2023885), (115, 1073539), (305, 404777), (1403, 87995), (7015, 17599)]