20751475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 27507168

約数和(自身を除く): 6755693

約数列:

[1, 5, 17, 25, 85, 157, 311, 425, 785, 1555, 2669, 3925, 5287, 7775, 13345, 26435, 48827, 66725, 132175, 244135, 830059, 1220675, 4150295, 20751475]

約数ペア:

[(1, 20751475), (5, 4150295), (17, 1220675), (25, 830059), (85, 244135), (157, 132175), (311, 66725), (425, 48827), (785, 26435), (1555, 13345), (2669, 7775), (3925, 5287)]