2774440

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 6300000

約数和(自身を除く): 3525560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 499, 556, 695, 998, 1112, 1390, 1996, 2495, 2780, 3992, 4990, 5560, 9980, 19960, 69361, 138722, 277444, 346805, 554888, 693610, 1387220, 2774440]

約数ペア:

[(1, 2774440), (2, 1387220), (4, 693610), (5, 554888), (8, 346805), (10, 277444), (20, 138722), (40, 69361), (139, 19960), (278, 9980), (499, 5560), (556, 4990), (695, 3992), (998, 2780), (1112, 2495), (1390, 1996)]