81012925

素因数分解:

$5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1613}}^1$

素因数の和:1678

約数の個数: 36

約数和(自身を含む): 119781396

約数和(自身を除く): 38768471

約数列:

[1, 5, 7, 25, 35, 41, 49, 175, 205, 245, 287, 1025, 1225, 1435, 1613, 2009, 7175, 8065, 10045, 11291, 40325, 50225, 56455, 66133, 79037, 282275, 330665, 395185, 462931, 1653325, 1975925, 2314655, 3240517, 11573275, 16202585, 81012925]

約数ペア:

[(1, 81012925), (5, 16202585), (7, 11573275), (25, 3240517), (35, 2314655), (41, 1975925), (49, 1653325), (175, 462931), (205, 395185), (245, 330665), (287, 282275), (1025, 79037), (1225, 66133), (1435, 56455), (1613, 50225), (2009, 40325), (7175, 11291), (8065, 10045)]