19735280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5737}}^1$

素因数の和:5793

約数の個数: 40

約数和(自身を含む): 46959792

約数和(自身を除く): 27224512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5737, 11474, 22948, 28685, 45896, 57370, 91792, 114740, 229480, 246691, 458960, 493382, 986764, 1233455, 1973528, 2466910, 3947056, 4933820, 9867640, 19735280]

約数ペア:

[(1, 19735280), (2, 9867640), (4, 4933820), (5, 3947056), (8, 2466910), (10, 1973528), (16, 1233455), (20, 986764), (40, 493382), (43, 458960), (80, 246691), (86, 229480), (172, 114740), (215, 91792), (344, 57370), (430, 45896), (688, 28685), (860, 22948), (1720, 11474), (3440, 5737)]