20697445

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1\times {\mathrm{409}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 25830000

約数和(自身を除く): 5132555

約数列:

[1, 5, 29, 145, 349, 409, 1745, 2045, 10121, 11861, 50605, 59305, 142741, 713705, 4139489, 20697445]

約数ペア:

[(1, 20697445), (5, 4139489), (29, 713705), (145, 142741), (349, 59305), (409, 50605), (1745, 11861), (2045, 10121)]