78387280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22787}}^1$

素因数の和:22843

約数の個数: 40

約数和(自身を含む): 186496992

約数和(自身を除く): 108109712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22787, 45574, 91148, 113935, 182296, 227870, 364592, 455740, 911480, 979841, 1822960, 1959682, 3919364, 4899205, 7838728, 9798410, 15677456, 19596820, 39193640, 78387280]

約数ペア:

[(1, 78387280), (2, 39193640), (4, 19596820), (5, 15677456), (8, 9798410), (10, 7838728), (16, 4899205), (20, 3919364), (40, 1959682), (43, 1822960), (80, 979841), (86, 911480), (172, 455740), (215, 364592), (344, 227870), (430, 182296), (688, 113935), (860, 91148), (1720, 45574), (3440, 22787)]