1688720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:144

約数の個数: 80

約数和(自身を含む): 4553280

約数和(自身を除く): 2864560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 101, 110, 152, 176, 190, 202, 209, 220, 304, 380, 404, 418, 440, 505, 760, 808, 836, 880, 1010, 1045, 1111, 1520, 1616, 1672, 1919, 2020, 2090, 2222, 3344, 3838, 4040, 4180, 4444, 5555, 7676, 8080, 8360, 8888, 9595, 11110, 15352, 16720, 17776, 19190, 21109, 22220, 30704, 38380, 42218, 44440, 76760, 84436, 88880, 105545, 153520, 168872, 211090, 337744, 422180, 844360, 1688720]

約数ペア:

[(1, 1688720), (2, 844360), (4, 422180), (5, 337744), (8, 211090), (10, 168872), (11, 153520), (16, 105545), (19, 88880), (20, 84436), (22, 76760), (38, 44440), (40, 42218), (44, 38380), (55, 30704), (76, 22220), (80, 21109), (88, 19190), (95, 17776), (101, 16720), (110, 15352), (152, 11110), (176, 9595), (190, 8888), (202, 8360), (209, 8080), (220, 7676), (304, 5555), (380, 4444), (404, 4180), (418, 4040), (440, 3838), (505, 3344), (760, 2222), (808, 2090), (836, 2020), (880, 1919), (1010, 1672), (1045, 1616), (1111, 1520)]