28319375

素因数分解:

$5^4\times 7^1\times {\mathrm{6473}}^1$

素因数の和:6500

約数の個数: 20

約数和(自身を含む): 40449552

約数和(自身を除く): 12130177

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 6473, 32365, 45311, 161825, 226555, 809125, 1132775, 4045625, 5663875, 28319375]

約数ペア:

[(1, 28319375), (5, 5663875), (7, 4045625), (25, 1132775), (35, 809125), (125, 226555), (175, 161825), (625, 45311), (875, 32365), (4375, 6473)]