3920990975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1\times {\mathrm{491}}^1$

素因数の和:992

約数の個数: 48

約数和(自身を含む): 5402868480

約数和(自身を除く): 1481877505

約数列:

[1, 5, 11, 25, 55, 71, 275, 355, 409, 491, 781, 1775, 2045, 2455, 3905, 4499, 5401, 10225, 12275, 19525, 22495, 27005, 29039, 34861, 112475, 135025, 145195, 174305, 200819, 319429, 383471, 725975, 871525, 1004095, 1597145, 1917355, 2209009, 5020475, 7985725, 9586775, 11045045, 14258149, 55225225, 71290745, 156839639, 356453725, 784198195, 3920990975]

約数ペア:

[(1, 3920990975), (5, 784198195), (11, 356453725), (25, 156839639), (55, 71290745), (71, 55225225), (275, 14258149), (355, 11045045), (409, 9586775), (491, 7985725), (781, 5020475), (1775, 2209009), (2045, 1917355), (2455, 1597145), (3905, 1004095), (4499, 871525), (5401, 725975), (10225, 383471), (12275, 319429), (19525, 200819), (22495, 174305), (27005, 145195), (29039, 135025), (34861, 112475)]