2777500

素因数分解:

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

素因数の和:136

約数の個数: 60

約数和(自身を含む): 6691608

約数和(自身を除く): 3914108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 101, 110, 125, 202, 220, 250, 275, 404, 500, 505, 550, 625, 1010, 1100, 1111, 1250, 1375, 2020, 2222, 2500, 2525, 2750, 4444, 5050, 5500, 5555, 6875, 10100, 11110, 12625, 13750, 22220, 25250, 27500, 27775, 50500, 55550, 63125, 111100, 126250, 138875, 252500, 277750, 555500, 694375, 1388750, 2777500]

約数ペア:

[(1, 2777500), (2, 1388750), (4, 694375), (5, 555500), (10, 277750), (11, 252500), (20, 138875), (22, 126250), (25, 111100), (44, 63125), (50, 55550), (55, 50500), (100, 27775), (101, 27500), (110, 25250), (125, 22220), (202, 13750), (220, 12625), (250, 11110), (275, 10100), (404, 6875), (500, 5555), (505, 5500), (550, 5050), (625, 4444), (1010, 2750), (1100, 2525), (1111, 2500), (1250, 2222), (1375, 2020)]