20180305

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:644

約数の個数: 16

約数和(自身を含む): 24786000

約数和(自身を除く): 4605695

約数列:

[1, 5, 89, 101, 445, 449, 505, 2245, 8989, 39961, 44945, 45349, 199805, 226745, 4036061, 20180305]

約数ペア:

[(1, 20180305), (5, 4036061), (89, 226745), (101, 199805), (445, 45349), (449, 44945), (505, 39961), (2245, 8989)]