21347480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:297

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40860520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 29, 35, 40, 44, 55, 56, 58, 70, 77, 88, 110, 116, 140, 145, 154, 203, 220, 232, 239, 280, 290, 308, 319, 385, 406, 440, 478, 580, 616, 638, 770, 812, 956, 1015, 1160, 1195, 1276, 1540, 1595, 1624, 1673, 1912, 2030, 2233, 2390, 2552, 2629, 3080, 3190, 3346, 4060, 4466, 4780, 5258, 6380, 6692, 6931, 8120, 8365, 8932, 9560, 10516, 11165, 12760, 13145, 13384, 13862, 16730, 17864, 18403, 21032, 22330, 26290, 27724, 33460, 34655, 36806, 44660, 48517, 52580, 55448, 66920, 69310, 73612, 76241, 89320, 92015, 97034, 105160, 138620, 147224, 152482, 184030, 194068, 242585, 277240, 304964, 368060, 381205, 388136, 485170, 533687, 609928, 736120, 762410, 970340, 1067374, 1524820, 1940680, 2134748, 2668435, 3049640, 4269496, 5336870, 10673740, 21347480]

約数ペア:

[(1, 21347480), (2, 10673740), (4, 5336870), (5, 4269496), (7, 3049640), (8, 2668435), (10, 2134748), (11, 1940680), (14, 1524820), (20, 1067374), (22, 970340), (28, 762410), (29, 736120), (35, 609928), (40, 533687), (44, 485170), (55, 388136), (56, 381205), (58, 368060), (70, 304964), (77, 277240), (88, 242585), (110, 194068), (116, 184030), (140, 152482), (145, 147224), (154, 138620), (203, 105160), (220, 97034), (232, 92015), (239, 89320), (280, 76241), (290, 73612), (308, 69310), (319, 66920), (385, 55448), (406, 52580), (440, 48517), (478, 44660), (580, 36806), (616, 34655), (638, 33460), (770, 27724), (812, 26290), (956, 22330), (1015, 21032), (1160, 18403), (1195, 17864), (1276, 16730), (1540, 13862), (1595, 13384), (1624, 13145), (1673, 12760), (1912, 11165), (2030, 10516), (2233, 9560), (2390, 8932), (2552, 8365), (2629, 8120), (3080, 6931), (3190, 6692), (3346, 6380), (4060, 5258), (4466, 4780)]