80811020

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{8999}}^1$

素因数の和:9457

約数の個数: 24

約数和(自身を含む): 170100000

約数和(自身を除く): 89288980

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8980, 8999, 17998, 35996, 44995, 89990, 179980, 4040551, 8081102, 16162204, 20202755, 40405510, 80811020]

約数ペア:

[(1, 80811020), (2, 40405510), (4, 20202755), (5, 16162204), (10, 8081102), (20, 4040551), (449, 179980), (898, 89990), (1796, 44995), (2245, 35996), (4490, 17998), (8980, 8999)]