80904920

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{5281}}^1$

素因数の和:5675

約数の個数: 32

約数和(自身を含む): 182545920

約数和(自身を除く): 101641000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 5281, 7660, 10562, 15320, 21124, 26405, 42248, 52810, 105620, 211240, 2022623, 4045246, 8090492, 10113115, 16180984, 20226230, 40452460, 80904920]

約数ペア:

[(1, 80904920), (2, 40452460), (4, 20226230), (5, 16180984), (8, 10113115), (10, 8090492), (20, 4045246), (40, 2022623), (383, 211240), (766, 105620), (1532, 52810), (1915, 42248), (3064, 26405), (3830, 21124), (5281, 15320), (7660, 10562)]