81701080

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7537}}^1$

素因数の和:7819

約数の個数: 32

約数和(自身を含む): 184530240

約数和(自身を除く): 102829160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 7537, 10840, 15074, 30148, 37685, 60296, 75370, 150740, 301480, 2042527, 4085054, 8170108, 10212635, 16340216, 20425270, 40850540, 81701080]

約数ペア:

[(1, 81701080), (2, 40850540), (4, 20425270), (5, 16340216), (8, 10212635), (10, 8170108), (20, 4085054), (40, 2042527), (271, 301480), (542, 150740), (1084, 75370), (1355, 60296), (2168, 37685), (2710, 30148), (5420, 15074), (7537, 10840)]