21109000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:152

約数の個数: 128

約数和(自身を含む): 57283200

約数和(自身を除く): 36174200

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 38, 40, 44, 50, 55, 76, 88, 95, 100, 101, 110, 125, 152, 190, 200, 202, 209, 220, 250, 275, 380, 404, 418, 440, 475, 500, 505, 550, 760, 808, 836, 950, 1000, 1010, 1045, 1100, 1111, 1375, 1672, 1900, 1919, 2020, 2090, 2200, 2222, 2375, 2525, 2750, 3800, 3838, 4040, 4180, 4444, 4750, 5050, 5225, 5500, 5555, 7676, 8360, 8888, 9500, 9595, 10100, 10450, 11000, 11110, 12625, 15352, 19000, 19190, 20200, 20900, 21109, 22220, 25250, 26125, 27775, 38380, 41800, 42218, 44440, 47975, 50500, 52250, 55550, 76760, 84436, 95950, 101000, 104500, 105545, 111100, 138875, 168872, 191900, 209000, 211090, 222200, 239875, 277750, 383800, 422180, 479750, 527725, 555500, 844360, 959500, 1055450, 1111000, 1919000, 2110900, 2638625, 4221800, 5277250, 10554500, 21109000]

約数ペア:

[(1, 21109000), (2, 10554500), (4, 5277250), (5, 4221800), (8, 2638625), (10, 2110900), (11, 1919000), (19, 1111000), (20, 1055450), (22, 959500), (25, 844360), (38, 555500), (40, 527725), (44, 479750), (50, 422180), (55, 383800), (76, 277750), (88, 239875), (95, 222200), (100, 211090), (101, 209000), (110, 191900), (125, 168872), (152, 138875), (190, 111100), (200, 105545), (202, 104500), (209, 101000), (220, 95950), (250, 84436), (275, 76760), (380, 55550), (404, 52250), (418, 50500), (440, 47975), (475, 44440), (500, 42218), (505, 41800), (550, 38380), (760, 27775), (808, 26125), (836, 25250), (950, 22220), (1000, 21109), (1010, 20900), (1045, 20200), (1100, 19190), (1111, 19000), (1375, 15352), (1672, 12625), (1900, 11110), (1919, 11000), (2020, 10450), (2090, 10100), (2200, 9595), (2222, 9500), (2375, 8888), (2525, 8360), (2750, 7676), (3800, 5555), (3838, 5500), (4040, 5225), (4180, 5050), (4444, 4750)]