81368500

素因数分解:

$2^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{1493}}^1$

素因数の和:1621

約数の個数: 48

約数和(自身を含む): 179459280

約数和(自身を除く): 98090780

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 125, 218, 250, 436, 500, 545, 1090, 1493, 2180, 2725, 2986, 5450, 5972, 7465, 10900, 13625, 14930, 27250, 29860, 37325, 54500, 74650, 149300, 162737, 186625, 325474, 373250, 650948, 746500, 813685, 1627370, 3254740, 4068425, 8136850, 16273700, 20342125, 40684250, 81368500]

約数ペア:

[(1, 81368500), (2, 40684250), (4, 20342125), (5, 16273700), (10, 8136850), (20, 4068425), (25, 3254740), (50, 1627370), (100, 813685), (109, 746500), (125, 650948), (218, 373250), (250, 325474), (436, 186625), (500, 162737), (545, 149300), (1090, 74650), (1493, 54500), (2180, 37325), (2725, 29860), (2986, 27250), (5450, 14930), (5972, 13625), (7465, 10900)]