131703280

素因数分解:

$2^4\times 5^1\times {\mathrm{1646291}}^1$

素因数の和:1646304

約数の個数: 20

約数和(自身を含む): 306210312

約数和(自身を除く): 174507032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1646291, 3292582, 6585164, 8231455, 13170328, 16462910, 26340656, 32925820, 65851640, 131703280]

約数ペア:

[(1, 131703280), (2, 65851640), (4, 32925820), (5, 26340656), (8, 16462910), (10, 13170328), (16, 8231455), (20, 6585164), (40, 3292582), (80, 1646291)]