28161320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2207}}^1$

素因数の和:2258

約数の個数: 64

約数和(自身を含む): 71539200

約数和(自身を除く): 43377880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 2207, 2552, 3190, 4414, 6380, 8828, 11035, 12760, 17656, 22070, 24277, 44140, 48554, 64003, 88280, 97108, 121385, 128006, 194216, 242770, 256012, 320015, 485540, 512024, 640030, 704033, 971080, 1280060, 1408066, 2560120, 2816132, 3520165, 5632264, 7040330, 14080660, 28161320]

約数ペア:

[(1, 28161320), (2, 14080660), (4, 7040330), (5, 5632264), (8, 3520165), (10, 2816132), (11, 2560120), (20, 1408066), (22, 1280060), (29, 971080), (40, 704033), (44, 640030), (55, 512024), (58, 485540), (88, 320015), (110, 256012), (116, 242770), (145, 194216), (220, 128006), (232, 121385), (290, 97108), (319, 88280), (440, 64003), (580, 48554), (638, 44140), (1160, 24277), (1276, 22070), (1595, 17656), (2207, 12760), (2552, 11035), (3190, 8828), (4414, 6380)]