20447475

素因数分解:

$3^1\times 5^2\times {\mathrm{337}}^1\times {\mathrm{809}}^1$

素因数の和:1159

約数の個数: 24

約数和(自身を含む): 33948720

約数和(自身を除く): 13501245

約数列:

[1, 3, 5, 15, 25, 75, 337, 809, 1011, 1685, 2427, 4045, 5055, 8425, 12135, 20225, 25275, 60675, 272633, 817899, 1363165, 4089495, 6815825, 20447475]

約数ペア:

[(1, 20447475), (3, 6815825), (5, 4089495), (15, 1363165), (25, 817899), (75, 272633), (337, 60675), (809, 25275), (1011, 20225), (1685, 12135), (2427, 8425), (4045, 5055)]