21884780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{337}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 27176596

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 337, 340, 382, 674, 764, 955, 1348, 1685, 1910, 3247, 3370, 3820, 5729, 6494, 6740, 11458, 12988, 16235, 22916, 28645, 32470, 57290, 64367, 64940, 114580, 128734, 257468, 321835, 643670, 1094239, 1287340, 2188478, 4376956, 5471195, 10942390, 21884780]

約数ペア:

[(1, 21884780), (2, 10942390), (4, 5471195), (5, 4376956), (10, 2188478), (17, 1287340), (20, 1094239), (34, 643670), (68, 321835), (85, 257468), (170, 128734), (191, 114580), (337, 64940), (340, 64367), (382, 57290), (674, 32470), (764, 28645), (955, 22916), (1348, 16235), (1685, 12988), (1910, 11458), (3247, 6740), (3370, 6494), (3820, 5729)]