81119440

素因数分解:

$2^4\times 5^1\times {\mathrm{1013993}}^1$

素因数の和:1014006

約数の個数: 20

約数和(自身を含む): 188602884

約数和(自身を除く): 107483444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013993, 2027986, 4055972, 5069965, 8111944, 10139930, 16223888, 20279860, 40559720, 81119440]

約数ペア:

[(1, 81119440), (2, 40559720), (4, 20279860), (5, 16223888), (8, 10139930), (10, 8111944), (16, 5069965), (20, 4055972), (40, 2027986), (80, 1013993)]