6439280

素因数分解:

$2^4\times 5^1\times {\mathrm{80491}}^1$

素因数の和:80504

約数の個数: 20

約数和(自身を含む): 14971512

約数和(自身を除く): 8532232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 80491, 160982, 321964, 402455, 643928, 804910, 1287856, 1609820, 3219640, 6439280]

約数ペア:

[(1, 6439280), (2, 3219640), (4, 1609820), (5, 1287856), (8, 804910), (10, 643928), (16, 402455), (20, 321964), (40, 160982), (80, 80491)]