20651225

素因数分解:

$5^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{593}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 29462400

約数和(自身を除く): 8811175

約数列:

[1, 5, 7, 25, 35, 175, 199, 593, 995, 1393, 2965, 4151, 4975, 6965, 14825, 20755, 34825, 103775, 118007, 590035, 826049, 2950175, 4130245, 20651225]

約数ペア:

[(1, 20651225), (5, 4130245), (7, 2950175), (25, 826049), (35, 590035), (175, 118007), (199, 103775), (593, 34825), (995, 20755), (1393, 14825), (2965, 6965), (4151, 4975)]