80931475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{997}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 106921728

約数和(自身を除く): 25990253

約数列:

[1, 5, 17, 25, 85, 191, 425, 955, 997, 3247, 4775, 4985, 16235, 16949, 24925, 81175, 84745, 190427, 423725, 952135, 3237259, 4760675, 16186295, 80931475]

約数ペア:

[(1, 80931475), (5, 16186295), (17, 4760675), (25, 3237259), (85, 952135), (191, 423725), (425, 190427), (955, 84745), (997, 81175), (3247, 24925), (4775, 16949), (4985, 16235)]