5555000

素因数分解:

$2^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:138

約数の個数: 80

約数和(自身を含む): 14339160

約数和(自身を除く): 8784160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 101, 110, 125, 200, 202, 220, 250, 275, 404, 440, 500, 505, 550, 625, 808, 1000, 1010, 1100, 1111, 1250, 1375, 2020, 2200, 2222, 2500, 2525, 2750, 4040, 4444, 5000, 5050, 5500, 5555, 6875, 8888, 10100, 11000, 11110, 12625, 13750, 20200, 22220, 25250, 27500, 27775, 44440, 50500, 55000, 55550, 63125, 101000, 111100, 126250, 138875, 222200, 252500, 277750, 505000, 555500, 694375, 1111000, 1388750, 2777500, 5555000]

約数ペア:

[(1, 5555000), (2, 2777500), (4, 1388750), (5, 1111000), (8, 694375), (10, 555500), (11, 505000), (20, 277750), (22, 252500), (25, 222200), (40, 138875), (44, 126250), (50, 111100), (55, 101000), (88, 63125), (100, 55550), (101, 55000), (110, 50500), (125, 44440), (200, 27775), (202, 27500), (220, 25250), (250, 22220), (275, 20200), (404, 13750), (440, 12625), (500, 11110), (505, 11000), (550, 10100), (625, 8888), (808, 6875), (1000, 5555), (1010, 5500), (1100, 5050), (1111, 5000), (1250, 4444), (1375, 4040), (2020, 2750), (2200, 2525), (2222, 2500)]