31123615

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 40434768

約数和(自身を除く): 9311153

約数列:

[1, 5, 19, 43, 95, 215, 361, 401, 817, 1805, 2005, 4085, 7619, 15523, 17243, 38095, 77615, 86215, 144761, 327617, 723805, 1638085, 6224723, 31123615]

約数ペア:

[(1, 31123615), (5, 6224723), (19, 1638085), (43, 723805), (95, 327617), (215, 144761), (361, 86215), (401, 77615), (817, 38095), (1805, 17243), (2005, 15523), (4085, 7619)]