820171880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{169457}}^1$

素因数の和:169490

約数の個数: 48

約数和(自身を含む): 2028412260

約数和(自身を除く): 1208240380

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 169457, 338914, 677828, 847285, 1355656, 1694570, 1864027, 3389140, 3728054, 6778280, 7456108, 9320135, 14912216, 18640270, 20504297, 37280540, 41008594, 74561080, 82017188, 102521485, 164034376, 205042970, 410085940, 820171880]

約数ペア:

[(1, 820171880), (2, 410085940), (4, 205042970), (5, 164034376), (8, 102521485), (10, 82017188), (11, 74561080), (20, 41008594), (22, 37280540), (40, 20504297), (44, 18640270), (55, 14912216), (88, 9320135), (110, 7456108), (121, 6778280), (220, 3728054), (242, 3389140), (440, 1864027), (484, 1694570), (605, 1355656), (968, 847285), (1210, 677828), (2420, 338914), (4840, 169457)]