81344920

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5827}}^1$

素因数の和:6187

約数の個数: 32

約数和(自身を含む): 183582000

約数和(自身を除く): 102237080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5827, 6980, 11654, 13960, 23308, 29135, 46616, 58270, 116540, 233080, 2033623, 4067246, 8134492, 10168115, 16268984, 20336230, 40672460, 81344920]

約数ペア:

[(1, 81344920), (2, 40672460), (4, 20336230), (5, 16268984), (8, 10168115), (10, 8134492), (20, 4067246), (40, 2033623), (349, 233080), (698, 116540), (1396, 58270), (1745, 46616), (2792, 29135), (3490, 23308), (5827, 13960), (6980, 11654)]