28199780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2837}}^1$

素因数の和:2924

約数の個数: 48

約数和(自身を含む): 68656896

約数和(自身を除く): 40457116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 2837, 4970, 5674, 9940, 11348, 14185, 19859, 28370, 39718, 56740, 79436, 99295, 198590, 201427, 397180, 402854, 805708, 1007135, 1409989, 2014270, 2819978, 4028540, 5639956, 7049945, 14099890, 28199780]

約数ペア:

[(1, 28199780), (2, 14099890), (4, 7049945), (5, 5639956), (7, 4028540), (10, 2819978), (14, 2014270), (20, 1409989), (28, 1007135), (35, 805708), (70, 402854), (71, 397180), (140, 201427), (142, 198590), (284, 99295), (355, 79436), (497, 56740), (710, 39718), (994, 28370), (1420, 19859), (1988, 14185), (2485, 11348), (2837, 9940), (4970, 5674)]