12489220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{337}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 28108080

約数和(自身を除く): 15618860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 337, 340, 436, 545, 674, 1090, 1348, 1685, 1853, 2180, 3370, 3706, 5729, 6740, 7412, 9265, 11458, 18530, 22916, 28645, 36733, 37060, 57290, 73466, 114580, 146932, 183665, 367330, 624461, 734660, 1248922, 2497844, 3122305, 6244610, 12489220]

約数ペア:

[(1, 12489220), (2, 6244610), (4, 3122305), (5, 2497844), (10, 1248922), (17, 734660), (20, 624461), (34, 367330), (68, 183665), (85, 146932), (109, 114580), (170, 73466), (218, 57290), (337, 37060), (340, 36733), (436, 28645), (545, 22916), (674, 18530), (1090, 11458), (1348, 9265), (1685, 7412), (1853, 6740), (2180, 5729), (3370, 3706)]