206578659

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2072

約数の個数: 48

約数和(自身を含む): 346560000

約数和(自身を除く): 139981341

約数列:

[1, 3, 7, 19, 21, 37, 49, 57, 111, 133, 147, 259, 399, 703, 777, 931, 1813, 1999, 2109, 2793, 4921, 5439, 5997, 13993, 14763, 34447, 37981, 41979, 73963, 97951, 103341, 113943, 221889, 265867, 293853, 517741, 797601, 1405297, 1553223, 1861069, 3624187, 4215891, 5583207, 9837079, 10872561, 29511237, 68859553, 206578659]

約数ペア:

[(1, 206578659), (3, 68859553), (7, 29511237), (19, 10872561), (21, 9837079), (37, 5583207), (49, 4215891), (57, 3624187), (111, 1861069), (133, 1553223), (147, 1405297), (259, 797601), (399, 517741), (703, 293853), (777, 265867), (931, 221889), (1813, 113943), (1999, 103341), (2109, 97951), (2793, 73963), (4921, 41979), (5439, 37981), (5997, 34447), (13993, 14763)]