20161225

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5009}}^1$

素因数の和:5049

約数の個数: 24

約数和(自身を含む): 29819520

約数和(自身を除く): 9658295

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5009, 25045, 35063, 115207, 125225, 175315, 576035, 806449, 876575, 2880175, 4032245, 20161225]

約数ペア:

[(1, 20161225), (5, 4032245), (7, 2880175), (23, 876575), (25, 806449), (35, 576035), (115, 175315), (161, 125225), (175, 115207), (575, 35063), (805, 25045), (4025, 5009)]