129240640

素因数分解:

$2^6\times 5^1\times {\mathrm{403877}}^1$

素因数の和:403894

約数の個数: 28

約数和(自身を含む): 307755036

約数和(自身を除く): 178514396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 403877, 807754, 1615508, 2019385, 3231016, 4038770, 6462032, 8077540, 12924064, 16155080, 25848128, 32310160, 64620320, 129240640]

約数ペア:

[(1, 129240640), (2, 64620320), (4, 32310160), (5, 25848128), (8, 16155080), (10, 12924064), (16, 8077540), (20, 6462032), (32, 4038770), (40, 3231016), (64, 2019385), (80, 1615508), (160, 807754), (320, 403877)]