128606740

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{19427}}^1$

素因数の和:19767

約数の個数: 24

約数和(自身を含む): 270904032

約数和(自身を除く): 142297292

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 19427, 38854, 77708, 97135, 194270, 388540, 6430337, 12860674, 25721348, 32151685, 64303370, 128606740]

約数ペア:

[(1, 128606740), (2, 64303370), (4, 32151685), (5, 25721348), (10, 12860674), (20, 6430337), (331, 388540), (662, 194270), (1324, 97135), (1655, 77708), (3310, 38854), (6620, 19427)]