6465520

素因数分解:

$2^4\times 5^1\times {\mathrm{80819}}^1$

素因数の和:80832

約数の個数: 20

約数和(自身を含む): 15032520

約数和(自身を除く): 8567000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 80819, 161638, 323276, 404095, 646552, 808190, 1293104, 1616380, 3232760, 6465520]

約数ペア:

[(1, 6465520), (2, 3232760), (4, 1616380), (5, 1293104), (8, 808190), (10, 646552), (16, 404095), (20, 323276), (40, 161638), (80, 80819)]