80220760

素因数分解:

$2^3\times 5^1\times {\mathrm{2005519}}^1$

素因数の和:2005530

約数の個数: 16

約数和(自身を含む): 180496800

約数和(自身を除く): 100276040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2005519, 4011038, 8022076, 10027595, 16044152, 20055190, 40110380, 80220760]

約数ペア:

[(1, 80220760), (2, 40110380), (4, 20055190), (5, 16044152), (8, 10027595), (10, 8022076), (20, 4011038), (40, 2005519)]