79849980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:648

約数の個数: 144

約数和(自身を含む): 279552000

約数和(自身を除く): 199702020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 127, 140, 180, 210, 252, 254, 315, 381, 420, 499, 508, 630, 635, 762, 889, 998, 1143, 1260, 1270, 1497, 1524, 1778, 1905, 1996, 2286, 2495, 2540, 2667, 2994, 3493, 3556, 3810, 4445, 4491, 4572, 4990, 5334, 5715, 5988, 6986, 7485, 7620, 8001, 8890, 8982, 9980, 10479, 10668, 11430, 13335, 13972, 14970, 16002, 17465, 17780, 17964, 20958, 22455, 22860, 26670, 29940, 31437, 32004, 34930, 40005, 41916, 44910, 52395, 53340, 62874, 63373, 69860, 80010, 89820, 104790, 125748, 126746, 157185, 160020, 190119, 209580, 253492, 314370, 316865, 380238, 443611, 570357, 628740, 633730, 760476, 887222, 950595, 1140714, 1267460, 1330833, 1774444, 1901190, 2218055, 2281428, 2661666, 2851785, 3802380, 3992499, 4436110, 5323332, 5703570, 6654165, 7984998, 8872220, 11407140, 13308330, 15969996, 19962495, 26616660, 39924990, 79849980]

約数ペア:

[(1, 79849980), (2, 39924990), (3, 26616660), (4, 19962495), (5, 15969996), (6, 13308330), (7, 11407140), (9, 8872220), (10, 7984998), (12, 6654165), (14, 5703570), (15, 5323332), (18, 4436110), (20, 3992499), (21, 3802380), (28, 2851785), (30, 2661666), (35, 2281428), (36, 2218055), (42, 1901190), (45, 1774444), (60, 1330833), (63, 1267460), (70, 1140714), (84, 950595), (90, 887222), (105, 760476), (126, 633730), (127, 628740), (140, 570357), (180, 443611), (210, 380238), (252, 316865), (254, 314370), (315, 253492), (381, 209580), (420, 190119), (499, 160020), (508, 157185), (630, 126746), (635, 125748), (762, 104790), (889, 89820), (998, 80010), (1143, 69860), (1260, 63373), (1270, 62874), (1497, 53340), (1524, 52395), (1778, 44910), (1905, 41916), (1996, 40005), (2286, 34930), (2495, 32004), (2540, 31437), (2667, 29940), (2994, 26670), (3493, 22860), (3556, 22455), (3810, 20958), (4445, 17964), (4491, 17780), (4572, 17465), (4990, 16002), (5334, 14970), (5715, 13972), (5988, 13335), (6986, 11430), (7485, 10668), (7620, 10479), (8001, 9980), (8890, 8982)]