20984180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4051}}^1$

素因数の和:4104

約数の個数: 48

約数和(自身を含む): 51735936

約数和(自身を除く): 30751756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4051, 5180, 8102, 16204, 20255, 28357, 40510, 56714, 81020, 113428, 141785, 149887, 283570, 299774, 567140, 599548, 749435, 1049209, 1498870, 2098418, 2997740, 4196836, 5246045, 10492090, 20984180]

約数ペア:

[(1, 20984180), (2, 10492090), (4, 5246045), (5, 4196836), (7, 2997740), (10, 2098418), (14, 1498870), (20, 1049209), (28, 749435), (35, 599548), (37, 567140), (70, 299774), (74, 283570), (140, 149887), (148, 141785), (185, 113428), (259, 81020), (370, 56714), (518, 40510), (740, 28357), (1036, 20255), (1295, 16204), (2590, 8102), (4051, 5180)]