80945990

素因数分解:

$2^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{63737}}^1$

素因数の和:63871

約数の個数: 16

約数和(自身を含む): 146852352

約数和(自身を除く): 65906362

約数列:

[1, 2, 5, 10, 127, 254, 635, 1270, 63737, 127474, 318685, 637370, 8094599, 16189198, 40472995, 80945990]

約数ペア:

[(1, 80945990), (2, 40472995), (5, 16189198), (10, 8094599), (127, 637370), (254, 318685), (635, 127474), (1270, 63737)]