19890804975

素因数分解:

$3^1\times 5^2\times {\mathrm{409}}^1\times {\mathrm{648437}}^1$

素因数の和:648859

約数の個数: 24

約数和(自身を含む): 32966587920

約数和(自身を除く): 13075782945

約数列:

[1, 3, 5, 15, 25, 75, 409, 1227, 2045, 6135, 10225, 30675, 648437, 1945311, 3242185, 9726555, 16210925, 48632775, 265210733, 795632199, 1326053665, 3978160995, 6630268325, 19890804975]

約数ペア:

[(1, 19890804975), (3, 6630268325), (5, 3978160995), (15, 1326053665), (25, 795632199), (75, 265210733), (409, 48632775), (1227, 16210925), (2045, 9726555), (6135, 3242185), (10225, 1945311), (30675, 648437)]