18818080

素因数分解:

$2^5\times 5^1\times {\mathrm{337}}^1\times {\mathrm{349}}^1$

素因数の和:701

約数の個数: 48

約数和(自身を含む): 44717400

約数和(自身を除く): 25899320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 337, 349, 674, 698, 1348, 1396, 1685, 1745, 2696, 2792, 3370, 3490, 5392, 5584, 6740, 6980, 10784, 11168, 13480, 13960, 26960, 27920, 53920, 55840, 117613, 235226, 470452, 588065, 940904, 1176130, 1881808, 2352260, 3763616, 4704520, 9409040, 18818080]

約数ペア:

[(1, 18818080), (2, 9409040), (4, 4704520), (5, 3763616), (8, 2352260), (10, 1881808), (16, 1176130), (20, 940904), (32, 588065), (40, 470452), (80, 235226), (160, 117613), (337, 55840), (349, 53920), (674, 27920), (698, 26960), (1348, 13960), (1396, 13480), (1685, 11168), (1745, 10784), (2696, 6980), (2792, 6740), (3370, 5584), (3490, 5392)]