20807130980

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1321927}}^1$

素因数の和:1322723

約数の個数: 24

約数和(自身を含む): 43750529088

約数和(自身を除く): 22943398108

約数列:

[1, 2, 4, 5, 10, 20, 787, 1574, 3148, 3935, 7870, 15740, 1321927, 2643854, 5287708, 6609635, 13219270, 26438540, 1040356549, 2080713098, 4161426196, 5201782745, 10403565490, 20807130980]

約数ペア:

[(1, 20807130980), (2, 10403565490), (4, 5201782745), (5, 4161426196), (10, 2080713098), (20, 1040356549), (787, 26438540), (1574, 13219270), (3148, 6609635), (3935, 5287708), (7870, 2643854), (15740, 1321927)]