1028417680

素因数分解:

$2^4\times 5^1\times {\mathrm{12855221}}^1$

素因数の和:12855234

約数の個数: 20

約数和(自身を含む): 2391071292

約数和(自身を除く): 1362653612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 12855221, 25710442, 51420884, 64276105, 102841768, 128552210, 205683536, 257104420, 514208840, 1028417680]

約数ペア:

[(1, 1028417680), (2, 514208840), (4, 257104420), (5, 205683536), (8, 128552210), (10, 102841768), (16, 64276105), (20, 51420884), (40, 25710442), (80, 12855221)]