28837520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 70120512

約数和(自身を除く): 41282992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 83, 86, 101, 166, 172, 202, 215, 332, 344, 404, 415, 430, 505, 664, 688, 808, 830, 860, 1010, 1328, 1616, 1660, 1720, 2020, 3320, 3440, 3569, 4040, 4343, 6640, 7138, 8080, 8383, 8686, 14276, 16766, 17372, 17845, 21715, 28552, 33532, 34744, 35690, 41915, 43430, 57104, 67064, 69488, 71380, 83830, 86860, 134128, 142760, 167660, 173720, 285520, 335320, 347440, 360469, 670640, 720938, 1441876, 1802345, 2883752, 3604690, 5767504, 7209380, 14418760, 28837520]

約数ペア:

[(1, 28837520), (2, 14418760), (4, 7209380), (5, 5767504), (8, 3604690), (10, 2883752), (16, 1802345), (20, 1441876), (40, 720938), (43, 670640), (80, 360469), (83, 347440), (86, 335320), (101, 285520), (166, 173720), (172, 167660), (202, 142760), (215, 134128), (332, 86860), (344, 83830), (404, 71380), (415, 69488), (430, 67064), (505, 57104), (664, 43430), (688, 41915), (808, 35690), (830, 34744), (860, 33532), (1010, 28552), (1328, 21715), (1616, 17845), (1660, 17372), (1720, 16766), (2020, 14276), (3320, 8686), (3440, 8383), (3569, 8080), (4040, 7138), (4343, 6640)]