208371440

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20509}}^1$

素因数の和:20649

約数の個数: 40

約数和(自身を含む): 488302080

約数和(自身を除く): 279930640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 20509, 41018, 82036, 102545, 164072, 205090, 328144, 410180, 820360, 1640720, 2604643, 5209286, 10418572, 13023215, 20837144, 26046430, 41674288, 52092860, 104185720, 208371440]

約数ペア:

[(1, 208371440), (2, 104185720), (4, 52092860), (5, 41674288), (8, 26046430), (10, 20837144), (16, 13023215), (20, 10418572), (40, 5209286), (80, 2604643), (127, 1640720), (254, 820360), (508, 410180), (635, 328144), (1016, 205090), (1270, 164072), (2032, 102545), (2540, 82036), (5080, 41018), (10160, 20509)]