20121520916

素因数分解:

$2^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{281}}^1\times {\mathrm{3547}}^1$

素因数の和:3949

約数の個数: 72

約数和(自身を含む): 41518241856

約数和(自身を除く): 21396720940

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 103, 196, 206, 281, 412, 562, 721, 1124, 1442, 1967, 2884, 3547, 3934, 5047, 7094, 7868, 10094, 13769, 14188, 20188, 24829, 27538, 28943, 49658, 55076, 57886, 99316, 115772, 173803, 202601, 347606, 365341, 405202, 695212, 730682, 810404, 996707, 1418207, 1461364, 1993414, 2557387, 2836414, 3986828, 5114774, 5672828, 6976949, 10229548, 13953898, 17901709, 27907796, 35803418, 48838643, 71606836, 97677286, 102660821, 195354572, 205321642, 410643284, 718625747, 1437251494, 2874502988, 5030380229, 10060760458, 20121520916]

約数ペア:

[(1, 20121520916), (2, 10060760458), (4, 5030380229), (7, 2874502988), (14, 1437251494), (28, 718625747), (49, 410643284), (98, 205321642), (103, 195354572), (196, 102660821), (206, 97677286), (281, 71606836), (412, 48838643), (562, 35803418), (721, 27907796), (1124, 17901709), (1442, 13953898), (1967, 10229548), (2884, 6976949), (3547, 5672828), (3934, 5114774), (5047, 3986828), (7094, 2836414), (7868, 2557387), (10094, 1993414), (13769, 1461364), (14188, 1418207), (20188, 996707), (24829, 810404), (27538, 730682), (28943, 695212), (49658, 405202), (55076, 365341), (57886, 347606), (99316, 202601), (115772, 173803)]