28119280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{337}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 75441600

約数和(自身を除く): 47322320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 337, 560, 596, 674, 745, 1043, 1192, 1348, 1490, 1685, 2086, 2359, 2384, 2696, 2980, 3370, 4172, 4718, 5215, 5392, 5960, 6740, 8344, 9436, 10430, 11795, 11920, 13480, 16688, 18872, 20860, 23590, 26960, 37744, 41720, 47180, 50213, 83440, 94360, 100426, 188720, 200852, 251065, 351491, 401704, 502130, 702982, 803408, 1004260, 1405964, 1757455, 2008520, 2811928, 3514910, 4017040, 5623856, 7029820, 14059640, 28119280]

約数ペア:

[(1, 28119280), (2, 14059640), (4, 7029820), (5, 5623856), (7, 4017040), (8, 3514910), (10, 2811928), (14, 2008520), (16, 1757455), (20, 1405964), (28, 1004260), (35, 803408), (40, 702982), (56, 502130), (70, 401704), (80, 351491), (112, 251065), (140, 200852), (149, 188720), (280, 100426), (298, 94360), (337, 83440), (560, 50213), (596, 47180), (674, 41720), (745, 37744), (1043, 26960), (1192, 23590), (1348, 20860), (1490, 18872), (1685, 16688), (2086, 13480), (2359, 11920), (2384, 11795), (2696, 10430), (2980, 9436), (3370, 8344), (4172, 6740), (4718, 5960), (5215, 5392)]