21907425

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6793}}^1$

素因数の和:6849

約数の個数: 24

約数和(自身を含む): 37068064

約数和(自身を除く): 15160639

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6793, 20379, 33965, 101895, 169825, 292099, 509475, 876297, 1460495, 4381485, 7302475, 21907425]

約数ペア:

[(1, 21907425), (3, 7302475), (5, 4381485), (15, 1460495), (25, 876297), (43, 509475), (75, 292099), (129, 169825), (215, 101895), (645, 33965), (1075, 20379), (3225, 6793)]