28781340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 192

約数和(自身を含む): 101606400

約数和(自身を除く): 72825060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 29, 30, 34, 35, 42, 51, 58, 60, 68, 70, 84, 85, 87, 102, 105, 116, 119, 139, 140, 145, 170, 174, 203, 204, 210, 238, 255, 278, 290, 340, 348, 357, 406, 417, 420, 435, 476, 493, 510, 556, 580, 595, 609, 695, 714, 812, 834, 870, 973, 986, 1015, 1020, 1190, 1218, 1390, 1428, 1479, 1668, 1740, 1785, 1946, 1972, 2030, 2085, 2363, 2380, 2436, 2465, 2780, 2919, 2958, 3045, 3451, 3570, 3892, 4031, 4060, 4170, 4726, 4865, 4930, 5838, 5916, 6090, 6902, 7089, 7140, 7395, 8062, 8340, 9452, 9730, 9860, 10353, 11676, 11815, 12093, 12180, 13804, 14178, 14595, 14790, 16124, 16541, 17255, 19460, 20155, 20706, 23630, 24186, 28217, 28356, 29190, 29580, 33082, 34510, 35445, 40310, 41412, 47260, 48372, 49623, 51765, 56434, 58380, 60465, 66164, 68527, 69020, 70890, 80620, 82705, 84651, 99246, 103530, 112868, 120930, 137054, 141085, 141780, 165410, 169302, 198492, 205581, 207060, 241860, 248115, 274108, 282170, 330820, 338604, 342635, 411162, 423255, 479689, 496230, 564340, 685270, 822324, 846510, 959378, 992460, 1027905, 1370540, 1439067, 1693020, 1918756, 2055810, 2398445, 2878134, 4111620, 4796890, 5756268, 7195335, 9593780, 14390670, 28781340]

約数ペア:

[(1, 28781340), (2, 14390670), (3, 9593780), (4, 7195335), (5, 5756268), (6, 4796890), (7, 4111620), (10, 2878134), (12, 2398445), (14, 2055810), (15, 1918756), (17, 1693020), (20, 1439067), (21, 1370540), (28, 1027905), (29, 992460), (30, 959378), (34, 846510), (35, 822324), (42, 685270), (51, 564340), (58, 496230), (60, 479689), (68, 423255), (70, 411162), (84, 342635), (85, 338604), (87, 330820), (102, 282170), (105, 274108), (116, 248115), (119, 241860), (139, 207060), (140, 205581), (145, 198492), (170, 169302), (174, 165410), (203, 141780), (204, 141085), (210, 137054), (238, 120930), (255, 112868), (278, 103530), (290, 99246), (340, 84651), (348, 82705), (357, 80620), (406, 70890), (417, 69020), (420, 68527), (435, 66164), (476, 60465), (493, 58380), (510, 56434), (556, 51765), (580, 49623), (595, 48372), (609, 47260), (695, 41412), (714, 40310), (812, 35445), (834, 34510), (870, 33082), (973, 29580), (986, 29190), (1015, 28356), (1020, 28217), (1190, 24186), (1218, 23630), (1390, 20706), (1428, 20155), (1479, 19460), (1668, 17255), (1740, 16541), (1785, 16124), (1946, 14790), (1972, 14595), (2030, 14178), (2085, 13804), (2363, 12180), (2380, 12093), (2436, 11815), (2465, 11676), (2780, 10353), (2919, 9860), (2958, 9730), (3045, 9452), (3451, 8340), (3570, 8062), (3892, 7395), (4031, 7140), (4060, 7089), (4170, 6902), (4726, 6090), (4865, 5916), (4930, 5838)]