12437720

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2237}}^1$

素因数の和:2387

約数の個数: 32

約数和(自身を含む): 28198800

約数和(自身を除く): 15761080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2237, 2780, 4474, 5560, 8948, 11185, 17896, 22370, 44740, 89480, 310943, 621886, 1243772, 1554715, 2487544, 3109430, 6218860, 12437720]

約数ペア:

[(1, 12437720), (2, 6218860), (4, 3109430), (5, 2487544), (8, 1554715), (10, 1243772), (20, 621886), (40, 310943), (139, 89480), (278, 44740), (556, 22370), (695, 17896), (1112, 11185), (1390, 8948), (2237, 5560), (2780, 4474)]