80506760

素因数分解:

$2^3\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{1559}}^1$

素因数の和:2861

約数の個数: 32

約数和(自身を含む): 181396800

約数和(自身を除く): 100890040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1291, 1559, 2582, 3118, 5164, 6236, 6455, 7795, 10328, 12472, 12910, 15590, 25820, 31180, 51640, 62360, 2012669, 4025338, 8050676, 10063345, 16101352, 20126690, 40253380, 80506760]

約数ペア:

[(1, 80506760), (2, 40253380), (4, 20126690), (5, 16101352), (8, 10063345), (10, 8050676), (20, 4025338), (40, 2012669), (1291, 62360), (1559, 51640), (2582, 31180), (3118, 25820), (5164, 15590), (6236, 12910), (6455, 12472), (7795, 10328)]