51759440

素因数分解:

$2^4\times 5^1\times {\mathrm{646993}}^1$

素因数の和:647006

約数の個数: 20

約数和(自身を含む): 120340884

約数和(自身を除く): 68581444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 646993, 1293986, 2587972, 3234965, 5175944, 6469930, 10351888, 12939860, 25879720, 51759440]

約数ペア:

[(1, 51759440), (2, 25879720), (4, 12939860), (5, 10351888), (8, 6469930), (10, 5175944), (16, 3234965), (20, 2587972), (40, 1293986), (80, 646993)]