79880120

素因数分解:

$2^3\times 5^1\times {\mathrm{1997003}}^1$

素因数の和:1997014

約数の個数: 16

約数和(自身を含む): 179730360

約数和(自身を除く): 99850240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997003, 3994006, 7988012, 9985015, 15976024, 19970030, 39940060, 79880120]

約数ペア:

[(1, 79880120), (2, 39940060), (4, 19970030), (5, 15976024), (8, 9985015), (10, 7988012), (20, 3994006), (40, 1997003)]