21004025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6317}}^1$

素因数の和:6353

約数の個数: 24

約数和(自身を含む): 31337280

約数和(自身を除く): 10333255

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 6317, 31585, 44219, 120023, 157925, 221095, 600115, 840161, 1105475, 3000575, 4200805, 21004025]

約数ペア:

[(1, 21004025), (5, 4200805), (7, 3000575), (19, 1105475), (25, 840161), (35, 600115), (95, 221095), (133, 157925), (175, 120023), (475, 44219), (665, 31585), (3325, 6317)]