649842740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{298093}}^1$

素因数の和:298211

約数の個数: 24

約数和(自身を含む): 1377194280

約数和(自身を除く): 727351540

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 298093, 596186, 1192372, 1490465, 2980930, 5961860, 32492137, 64984274, 129968548, 162460685, 324921370, 649842740]

約数ペア:

[(1, 649842740), (2, 324921370), (4, 162460685), (5, 129968548), (10, 64984274), (20, 32492137), (109, 5961860), (218, 2980930), (436, 1490465), (545, 1192372), (1090, 596186), (2180, 298093)]