20750775

素因数分解:

$3^1\times 5^2\times {\mathrm{337}}^1\times {\mathrm{821}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 34451664

約数和(自身を除く): 13700889

約数列:

[1, 3, 5, 15, 25, 75, 337, 821, 1011, 1685, 2463, 4105, 5055, 8425, 12315, 20525, 25275, 61575, 276677, 830031, 1383385, 4150155, 6916925, 20750775]

約数ペア:

[(1, 20750775), (3, 6916925), (5, 4150155), (15, 1383385), (25, 830031), (75, 276677), (337, 61575), (821, 25275), (1011, 20525), (1685, 12315), (2463, 8425), (4105, 5055)]