12456440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3499}}^1$

素因数の和:3599

約数の個数: 32

約数和(自身を含む): 28350000

約数和(自身を除く): 15893560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3499, 3560, 6998, 13996, 17495, 27992, 34990, 69980, 139960, 311411, 622822, 1245644, 1557055, 2491288, 3114110, 6228220, 12456440]

約数ペア:

[(1, 12456440), (2, 6228220), (4, 3114110), (5, 2491288), (8, 1557055), (10, 1245644), (20, 622822), (40, 311411), (89, 139960), (178, 69980), (356, 34990), (445, 27992), (712, 17495), (890, 13996), (1780, 6998), (3499, 3560)]