78183080

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2957}}^1$

素因数の和:3629

約数の個数: 32

約数和(自身を含む): 176237640

約数和(自身を除く): 98054560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 2957, 3305, 5288, 5914, 6610, 11828, 13220, 14785, 23656, 26440, 29570, 59140, 118280, 1954577, 3909154, 7818308, 9772885, 15636616, 19545770, 39091540, 78183080]

約数ペア:

[(1, 78183080), (2, 39091540), (4, 19545770), (5, 15636616), (8, 9772885), (10, 7818308), (20, 3909154), (40, 1954577), (661, 118280), (1322, 59140), (2644, 29570), (2957, 26440), (3305, 23656), (5288, 14785), (5914, 13220), (6610, 11828)]