79900120

素因数分解:

$2^3\times 5^1\times {\mathrm{1997503}}^1$

素因数の和:1997514

約数の個数: 16

約数和(自身を含む): 179775360

約数和(自身を除く): 99875240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997503, 3995006, 7990012, 9987515, 15980024, 19975030, 39950060, 79900120]

約数ペア:

[(1, 79900120), (2, 39950060), (4, 19975030), (5, 15980024), (8, 9987515), (10, 7990012), (20, 3995006), (40, 1997503)]