20500000920

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{40879}}^1$

素因数の和:41102

約数の個数: 192

約数和(自身を含む): 76527360000

約数和(自身を除く): 56027359080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 199, 210, 252, 280, 315, 360, 398, 420, 504, 597, 630, 796, 840, 995, 1194, 1260, 1393, 1592, 1791, 1990, 2388, 2520, 2786, 2985, 3582, 3980, 4179, 4776, 5572, 5970, 6965, 7164, 7960, 8358, 8955, 11144, 11940, 12537, 13930, 14328, 16716, 17910, 20895, 23880, 25074, 27860, 33432, 35820, 40879, 41790, 50148, 55720, 62685, 71640, 81758, 83580, 100296, 122637, 125370, 163516, 167160, 204395, 245274, 250740, 286153, 327032, 367911, 408790, 490548, 501480, 572306, 613185, 735822, 817580, 858459, 981096, 1144612, 1226370, 1430765, 1471644, 1635160, 1716918, 1839555, 2289224, 2452740, 2575377, 2861530, 2943288, 3433836, 3679110, 4292295, 4905480, 5150754, 5723060, 6867672, 7358220, 8134921, 8584590, 10301508, 11446120, 12876885, 14716440, 16269842, 17169180, 20603016, 24404763, 25753770, 32539684, 34338360, 40674605, 48809526, 51507540, 56944447, 65079368, 73214289, 81349210, 97619052, 103015080, 113888894, 122023815, 146428578, 162698420, 170833341, 195238104, 227777788, 244047630, 284722235, 292857156, 325396840, 341666682, 366071445, 455555576, 488095260, 512500023, 569444470, 585714312, 683333364, 732142890, 854166705, 976190520, 1025000046, 1138888940, 1366666728, 1464285780, 1708333410, 2050000092, 2277777880, 2562500115, 2928571560, 3416666820, 4100000184, 5125000230, 6833333640, 10250000460, 20500000920]

約数ペア:

[(1, 20500000920), (2, 10250000460), (3, 6833333640), (4, 5125000230), (5, 4100000184), (6, 3416666820), (7, 2928571560), (8, 2562500115), (9, 2277777880), (10, 2050000092), (12, 1708333410), (14, 1464285780), (15, 1366666728), (18, 1138888940), (20, 1025000046), (21, 976190520), (24, 854166705), (28, 732142890), (30, 683333364), (35, 585714312), (36, 569444470), (40, 512500023), (42, 488095260), (45, 455555576), (56, 366071445), (60, 341666682), (63, 325396840), (70, 292857156), (72, 284722235), (84, 244047630), (90, 227777788), (105, 195238104), (120, 170833341), (126, 162698420), (140, 146428578), (168, 122023815), (180, 113888894), (199, 103015080), (210, 97619052), (252, 81349210), (280, 73214289), (315, 65079368), (360, 56944447), (398, 51507540), (420, 48809526), (504, 40674605), (597, 34338360), (630, 32539684), (796, 25753770), (840, 24404763), (995, 20603016), (1194, 17169180), (1260, 16269842), (1393, 14716440), (1592, 12876885), (1791, 11446120), (1990, 10301508), (2388, 8584590), (2520, 8134921), (2786, 7358220), (2985, 6867672), (3582, 5723060), (3980, 5150754), (4179, 4905480), (4776, 4292295), (5572, 3679110), (5970, 3433836), (6965, 2943288), (7164, 2861530), (7960, 2575377), (8358, 2452740), (8955, 2289224), (11144, 1839555), (11940, 1716918), (12537, 1635160), (13930, 1471644), (14328, 1430765), (16716, 1226370), (17910, 1144612), (20895, 981096), (23880, 858459), (25074, 817580), (27860, 735822), (33432, 613185), (35820, 572306), (40879, 501480), (41790, 490548), (50148, 408790), (55720, 367911), (62685, 327032), (71640, 286153), (81758, 250740), (83580, 245274), (100296, 204395), (122637, 167160), (125370, 163516)]