20375975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 26269152

約数和(自身を除く): 5893177

約数列:

[1, 5, 25, 41, 103, 193, 205, 515, 965, 1025, 2575, 4223, 4825, 7913, 19879, 21115, 39565, 99395, 105575, 197825, 496975, 815039, 4075195, 20375975]

約数ペア:

[(1, 20375975), (5, 4075195), (25, 815039), (41, 496975), (103, 197825), (193, 105575), (205, 99395), (515, 39565), (965, 21115), (1025, 19879), (2575, 7913), (4223, 4825)]