20681799280

素因数分解:

$2^4\times 5^1\times {\mathrm{701}}^1\times {\mathrm{368791}}^1$

素因数の和:369505

約数の個数: 40

約数和(自身を含む): 48153909024

約数和(自身を除く): 27472109744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 701, 1402, 2804, 3505, 5608, 7010, 11216, 14020, 28040, 56080, 368791, 737582, 1475164, 1843955, 2950328, 3687910, 5900656, 7375820, 14751640, 29503280, 258522491, 517044982, 1034089964, 1292612455, 2068179928, 2585224910, 4136359856, 5170449820, 10340899640, 20681799280]

約数ペア:

[(1, 20681799280), (2, 10340899640), (4, 5170449820), (5, 4136359856), (8, 2585224910), (10, 2068179928), (16, 1292612455), (20, 1034089964), (40, 517044982), (80, 258522491), (701, 29503280), (1402, 14751640), (2804, 7375820), (3505, 5900656), (5608, 3687910), (7010, 2950328), (11216, 1843955), (14020, 1475164), (28040, 737582), (56080, 368791)]