217045840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{246643}}^1$

素因数の和:246667

約数の個数: 40

約数和(自身を含む): 550509408

約数和(自身を除く): 333463568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 246643, 493286, 986572, 1233215, 1973144, 2466430, 2713073, 3946288, 4932860, 5426146, 9865720, 10852292, 13565365, 19731440, 21704584, 27130730, 43409168, 54261460, 108522920, 217045840]

約数ペア:

[(1, 217045840), (2, 108522920), (4, 54261460), (5, 43409168), (8, 27130730), (10, 21704584), (11, 19731440), (16, 13565365), (20, 10852292), (22, 9865720), (40, 5426146), (44, 4932860), (55, 3946288), (80, 2713073), (88, 2466430), (110, 1973144), (176, 1233215), (220, 986572), (440, 493286), (880, 246643)]