28084140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:772

約数の個数: 144

約数和(自身を含む): 100638720

約数和(自身を除く): 72554580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 651, 719, 868, 930, 1085, 1116, 1260, 1302, 1395, 1438, 1860, 1953, 2157, 2170, 2604, 2790, 2876, 3255, 3595, 3906, 4314, 4340, 5033, 5580, 6471, 6510, 7190, 7812, 8628, 9765, 10066, 10785, 12942, 13020, 14380, 15099, 19530, 20132, 21570, 22289, 25165, 25884, 30198, 32355, 39060, 43140, 44578, 45297, 50330, 60396, 64710, 66867, 75495, 89156, 90594, 100660, 111445, 129420, 133734, 150990, 156023, 181188, 200601, 222890, 226485, 267468, 301980, 312046, 334335, 401202, 445780, 452970, 468069, 624092, 668670, 780115, 802404, 905940, 936138, 1003005, 1337340, 1404207, 1560230, 1872276, 2006010, 2340345, 2808414, 3120460, 4012020, 4680690, 5616828, 7021035, 9361380, 14042070, 28084140]

約数ペア:

[(1, 28084140), (2, 14042070), (3, 9361380), (4, 7021035), (5, 5616828), (6, 4680690), (7, 4012020), (9, 3120460), (10, 2808414), (12, 2340345), (14, 2006010), (15, 1872276), (18, 1560230), (20, 1404207), (21, 1337340), (28, 1003005), (30, 936138), (31, 905940), (35, 802404), (36, 780115), (42, 668670), (45, 624092), (60, 468069), (62, 452970), (63, 445780), (70, 401202), (84, 334335), (90, 312046), (93, 301980), (105, 267468), (124, 226485), (126, 222890), (140, 200601), (155, 181188), (180, 156023), (186, 150990), (210, 133734), (217, 129420), (252, 111445), (279, 100660), (310, 90594), (315, 89156), (372, 75495), (420, 66867), (434, 64710), (465, 60396), (558, 50330), (620, 45297), (630, 44578), (651, 43140), (719, 39060), (868, 32355), (930, 30198), (1085, 25884), (1116, 25165), (1260, 22289), (1302, 21570), (1395, 20132), (1438, 19530), (1860, 15099), (1953, 14380), (2157, 13020), (2170, 12942), (2604, 10785), (2790, 10066), (2876, 9765), (3255, 8628), (3595, 7812), (3906, 7190), (4314, 6510), (4340, 6471), (5033, 5580)]