19804825

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{463}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 25891200

約数和(自身を除く): 6086375

約数列:

[1, 5, 25, 29, 59, 145, 295, 463, 725, 1475, 1711, 2315, 8555, 11575, 13427, 27317, 42775, 67135, 136585, 335675, 682925, 792193, 3960965, 19804825]

約数ペア:

[(1, 19804825), (5, 3960965), (25, 792193), (29, 682925), (59, 335675), (145, 136585), (295, 67135), (463, 42775), (725, 27317), (1475, 13427), (1711, 11575), (2315, 8555)]