80205520

素因数分解:

$2^4\times 5^1\times {\mathrm{1002569}}^1$

素因数の和:1002582

約数の個数: 20

約数和(自身を含む): 186478020

約数和(自身を除く): 106272500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1002569, 2005138, 4010276, 5012845, 8020552, 10025690, 16041104, 20051380, 40102760, 80205520]

約数ペア:

[(1, 80205520), (2, 40102760), (4, 20051380), (5, 16041104), (8, 10025690), (10, 8020552), (16, 5012845), (20, 4010276), (40, 2005138), (80, 1002569)]