18709740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:532

約数の個数: 144

約数和(自身を含む): 67092480

約数和(自身を除く): 48382740

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, 479, 558, 620, 630, 651, 868, 930, 958, 1085, 1116, 1260, 1302, 1395, 1437, 1860, 1916, 1953, 2170, 2395, 2604, 2790, 2874, 3255, 3353, 3906, 4311, 4340, 4790, 5580, 5748, 6510, 6706, 7185, 7812, 8622, 9580, 9765, 10059, 13020, 13412, 14370, 14849, 16765, 17244, 19530, 20118, 21555, 28740, 29698, 30177, 33530, 39060, 40236, 43110, 44547, 50295, 59396, 60354, 67060, 74245, 86220, 89094, 100590, 103943, 120708, 133641, 148490, 150885, 178188, 201180, 207886, 222735, 267282, 296980, 301770, 311829, 415772, 445470, 519715, 534564, 603540, 623658, 668205, 890940, 935487, 1039430, 1247316, 1336410, 1559145, 1870974, 2078860, 2672820, 3118290, 3741948, 4677435, 6236580, 9354870, 18709740]

約数ペア:

[(1, 18709740), (2, 9354870), (3, 6236580), (4, 4677435), (5, 3741948), (6, 3118290), (7, 2672820), (9, 2078860), (10, 1870974), (12, 1559145), (14, 1336410), (15, 1247316), (18, 1039430), (20, 935487), (21, 890940), (28, 668205), (30, 623658), (31, 603540), (35, 534564), (36, 519715), (42, 445470), (45, 415772), (60, 311829), (62, 301770), (63, 296980), (70, 267282), (84, 222735), (90, 207886), (93, 201180), (105, 178188), (124, 150885), (126, 148490), (140, 133641), (155, 120708), (180, 103943), (186, 100590), (210, 89094), (217, 86220), (252, 74245), (279, 67060), (310, 60354), (315, 59396), (372, 50295), (420, 44547), (434, 43110), (465, 40236), (479, 39060), (558, 33530), (620, 30177), (630, 29698), (651, 28740), (868, 21555), (930, 20118), (958, 19530), (1085, 17244), (1116, 16765), (1260, 14849), (1302, 14370), (1395, 13412), (1437, 13020), (1860, 10059), (1916, 9765), (1953, 9580), (2170, 8622), (2395, 7812), (2604, 7185), (2790, 6706), (2874, 6510), (3255, 5748), (3353, 5580), (3906, 4790), (4311, 4340)]