1320236740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1031}}^1\times {\mathrm{1489}}^1$

素因数の和:2572

約数の個数: 48

約数和(自身を含む): 2841632640

約数和(自身を除く): 1521395900

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1031, 1489, 2062, 2978, 4124, 5155, 5956, 7445, 10310, 14890, 20620, 29780, 44333, 64027, 88666, 128054, 177332, 221665, 256108, 320135, 443330, 640270, 886660, 1280540, 1535159, 3070318, 6140636, 7675795, 15351590, 30703180, 66011837, 132023674, 264047348, 330059185, 660118370, 1320236740]

約数ペア:

[(1, 1320236740), (2, 660118370), (4, 330059185), (5, 264047348), (10, 132023674), (20, 66011837), (43, 30703180), (86, 15351590), (172, 7675795), (215, 6140636), (430, 3070318), (860, 1535159), (1031, 1280540), (1489, 886660), (2062, 640270), (2978, 443330), (4124, 320135), (5155, 256108), (5956, 221665), (7445, 177332), (10310, 128054), (14890, 88666), (20620, 64027), (29780, 44333)]