78812680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{115901}}^1$

素因数の和:115929

約数の個数: 32

約数和(自身を含む): 187761240

約数和(自身を除く): 108948560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 115901, 231802, 463604, 579505, 927208, 1159010, 1970317, 2318020, 3940634, 4636040, 7881268, 9851585, 15762536, 19703170, 39406340, 78812680]

約数ペア:

[(1, 78812680), (2, 39406340), (4, 19703170), (5, 15762536), (8, 9851585), (10, 7881268), (17, 4636040), (20, 3940634), (34, 2318020), (40, 1970317), (68, 1159010), (85, 927208), (136, 579505), (170, 463604), (340, 231802), (680, 115901)]