21062875

素因数分解:

$5^3\times {\mathrm{167}}^1\times {\mathrm{1009}}^1$

素因数の和:1191

約数の個数: 16

約数和(自身を含む): 26470080

約数和(自身を除く): 5407205

約数列:

[1, 5, 25, 125, 167, 835, 1009, 4175, 5045, 20875, 25225, 126125, 168503, 842515, 4212575, 21062875]

約数ペア:

[(1, 21062875), (5, 4212575), (25, 842515), (125, 168503), (167, 126125), (835, 25225), (1009, 20875), (4175, 5045)]