28490140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1033}}^1$

素因数の和:1246

約数の個数: 48

約数和(自身を含む): 68789952

約数和(自身を除く): 40299812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1033, 1379, 1970, 2066, 2758, 3940, 4132, 5165, 5516, 6895, 7231, 10330, 13790, 14462, 20660, 27580, 28924, 36155, 72310, 144620, 203501, 407002, 814004, 1017505, 1424507, 2035010, 2849014, 4070020, 5698028, 7122535, 14245070, 28490140]

約数ペア:

[(1, 28490140), (2, 14245070), (4, 7122535), (5, 5698028), (7, 4070020), (10, 2849014), (14, 2035010), (20, 1424507), (28, 1017505), (35, 814004), (70, 407002), (140, 203501), (197, 144620), (394, 72310), (788, 36155), (985, 28924), (1033, 27580), (1379, 20660), (1970, 14462), (2066, 13790), (2758, 10330), (3940, 7231), (4132, 6895), (5165, 5516)]