21270025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6397}}^1$

素因数の和:6433

約数の個数: 24

約数和(自身を含む): 31734080

約数和(自身を除く): 10464055

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 6397, 31985, 44779, 121543, 159925, 223895, 607715, 850801, 1119475, 3038575, 4254005, 21270025]

約数ペア:

[(1, 21270025), (5, 4254005), (7, 3038575), (19, 1119475), (25, 850801), (35, 607715), (95, 223895), (133, 159925), (175, 121543), (475, 44779), (665, 31985), (3325, 6397)]