86820475

素因数分解:

$5^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{1213}}^1$

素因数の和:1639

約数の個数: 24

約数和(自身を含む): 123439520

約数和(自身を除く): 36619045

約数列:

[1, 5, 7, 25, 35, 175, 409, 1213, 2045, 2863, 6065, 8491, 10225, 14315, 30325, 42455, 71575, 212275, 496117, 2480585, 3472819, 12402925, 17364095, 86820475]

約数ペア:

[(1, 86820475), (5, 17364095), (7, 12402925), (25, 3472819), (35, 2480585), (175, 496117), (409, 212275), (1213, 71575), (2045, 42455), (2863, 30325), (6065, 14315), (8491, 10225)]