80457320

素因数分解:

$2^3\times 5^1\times {\mathrm{709}}^1\times {\mathrm{2837}}^1$

素因数の和:3557

約数の個数: 32

約数和(自身を含む): 181348200

約数和(自身を除く): 100890880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 709, 1418, 2836, 2837, 3545, 5672, 5674, 7090, 11348, 14180, 14185, 22696, 28360, 28370, 56740, 113480, 2011433, 4022866, 8045732, 10057165, 16091464, 20114330, 40228660, 80457320]

約数ペア:

[(1, 80457320), (2, 40228660), (4, 20114330), (5, 16091464), (8, 10057165), (10, 8045732), (20, 4022866), (40, 2011433), (709, 113480), (1418, 56740), (2836, 28370), (2837, 28360), (3545, 22696), (5672, 14185), (5674, 14180), (7090, 11348)]