78828920

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{10211}}^1$

素因数の和:10415

約数の個数: 32

約数和(自身を含む): 178301520

約数和(自身を除く): 99472600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 10211, 20422, 40844, 51055, 81688, 102110, 204220, 408440, 1970723, 3941446, 7882892, 9853615, 15765784, 19707230, 39414460, 78828920]

約数ペア:

[(1, 78828920), (2, 39414460), (4, 19707230), (5, 15765784), (8, 9853615), (10, 7882892), (20, 3941446), (40, 1970723), (193, 408440), (386, 204220), (772, 102110), (965, 81688), (1544, 51055), (1930, 40844), (3860, 20422), (7720, 10211)]