217720945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{8353}}^1$

素因数の和:8772

約数の個数: 16

約数和(自身を含む): 282097872

約数和(自身を除く): 64376927

約数列:

[1, 5, 13, 65, 401, 2005, 5213, 8353, 26065, 41765, 108589, 542945, 3349553, 16747765, 43544189, 217720945]

約数ペア:

[(1, 217720945), (5, 43544189), (13, 16747765), (65, 3349553), (401, 542945), (2005, 108589), (5213, 41765), (8353, 26065)]