68451440

素因数分解:

$2^4\times 5^1\times {\mathrm{337}}^1\times {\mathrm{2539}}^1$

素因数の和:2889

約数の個数: 40

約数和(自身を含む): 159684720

約数和(自身を除く): 91233280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 674, 1348, 1685, 2539, 2696, 3370, 5078, 5392, 6740, 10156, 12695, 13480, 20312, 25390, 26960, 40624, 50780, 101560, 203120, 855643, 1711286, 3422572, 4278215, 6845144, 8556430, 13690288, 17112860, 34225720, 68451440]

約数ペア:

[(1, 68451440), (2, 34225720), (4, 17112860), (5, 13690288), (8, 8556430), (10, 6845144), (16, 4278215), (20, 3422572), (40, 1711286), (80, 855643), (337, 203120), (674, 101560), (1348, 50780), (1685, 40624), (2539, 26960), (2696, 25390), (3370, 20312), (5078, 13480), (5392, 12695), (6740, 10156)]