19420280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 128

約数和(自身を含む): 52876800

約数和(自身を除く): 33456520

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 23, 38, 40, 44, 46, 55, 76, 88, 92, 95, 101, 110, 115, 152, 184, 190, 202, 209, 220, 230, 253, 380, 404, 418, 437, 440, 460, 505, 506, 760, 808, 836, 874, 920, 1010, 1012, 1045, 1111, 1265, 1672, 1748, 1919, 2020, 2024, 2090, 2185, 2222, 2323, 2530, 3496, 3838, 4040, 4180, 4370, 4444, 4646, 4807, 5060, 5555, 7676, 8360, 8740, 8888, 9292, 9595, 9614, 10120, 11110, 11615, 15352, 17480, 18584, 19190, 19228, 21109, 22220, 23230, 24035, 25553, 38380, 38456, 42218, 44137, 44440, 46460, 48070, 51106, 76760, 84436, 88274, 92920, 96140, 102212, 105545, 127765, 168872, 176548, 192280, 204424, 211090, 220685, 255530, 353096, 422180, 441370, 485507, 511060, 844360, 882740, 971014, 1022120, 1765480, 1942028, 2427535, 3884056, 4855070, 9710140, 19420280]

約数ペア:

[(1, 19420280), (2, 9710140), (4, 4855070), (5, 3884056), (8, 2427535), (10, 1942028), (11, 1765480), (19, 1022120), (20, 971014), (22, 882740), (23, 844360), (38, 511060), (40, 485507), (44, 441370), (46, 422180), (55, 353096), (76, 255530), (88, 220685), (92, 211090), (95, 204424), (101, 192280), (110, 176548), (115, 168872), (152, 127765), (184, 105545), (190, 102212), (202, 96140), (209, 92920), (220, 88274), (230, 84436), (253, 76760), (380, 51106), (404, 48070), (418, 46460), (437, 44440), (440, 44137), (460, 42218), (505, 38456), (506, 38380), (760, 25553), (808, 24035), (836, 23230), (874, 22220), (920, 21109), (1010, 19228), (1012, 19190), (1045, 18584), (1111, 17480), (1265, 15352), (1672, 11615), (1748, 11110), (1919, 10120), (2020, 9614), (2024, 9595), (2090, 9292), (2185, 8888), (2222, 8740), (2323, 8360), (2530, 7676), (3496, 5555), (3838, 5060), (4040, 4807), (4180, 4646), (4370, 4444)]