79785520

素因数分解:

$2^4\times 5^1\times {\mathrm{997319}}^1$

素因数の和:997332

約数の個数: 20

約数和(自身を含む): 185501520

約数和(自身を除く): 105716000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997319, 1994638, 3989276, 4986595, 7978552, 9973190, 15957104, 19946380, 39892760, 79785520]

約数ペア:

[(1, 79785520), (2, 39892760), (4, 19946380), (5, 15957104), (8, 9973190), (10, 7978552), (16, 4986595), (20, 3989276), (40, 1994638), (80, 997319)]