20168400

素因数分解:

$2^4\times 3^1\times 5^2\times 7^5$

素因数の和:56

約数の個数: 180

約数和(自身を含む): 75373152

約数和(自身を除く): 55204752

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 49, 50, 56, 60, 70, 75, 80, 84, 98, 100, 105, 112, 120, 140, 147, 150, 168, 175, 196, 200, 210, 240, 245, 280, 294, 300, 336, 343, 350, 392, 400, 420, 490, 525, 560, 588, 600, 686, 700, 735, 784, 840, 980, 1029, 1050, 1176, 1200, 1225, 1372, 1400, 1470, 1680, 1715, 1960, 2058, 2100, 2352, 2401, 2450, 2744, 2800, 2940, 3430, 3675, 3920, 4116, 4200, 4802, 4900, 5145, 5488, 5880, 6860, 7203, 7350, 8232, 8400, 8575, 9604, 9800, 10290, 11760, 12005, 13720, 14406, 14700, 16464, 16807, 17150, 19208, 19600, 20580, 24010, 25725, 27440, 28812, 29400, 33614, 34300, 36015, 38416, 41160, 48020, 50421, 51450, 57624, 58800, 60025, 67228, 68600, 72030, 82320, 84035, 96040, 100842, 102900, 115248, 120050, 134456, 137200, 144060, 168070, 180075, 192080, 201684, 205800, 240100, 252105, 268912, 288120, 336140, 360150, 403368, 411600, 420175, 480200, 504210, 576240, 672280, 720300, 806736, 840350, 960400, 1008420, 1260525, 1344560, 1440600, 1680700, 2016840, 2521050, 2881200, 3361400, 4033680, 5042100, 6722800, 10084200, 20168400]

約数ペア:

[(1, 20168400), (2, 10084200), (3, 6722800), (4, 5042100), (5, 4033680), (6, 3361400), (7, 2881200), (8, 2521050), (10, 2016840), (12, 1680700), (14, 1440600), (15, 1344560), (16, 1260525), (20, 1008420), (21, 960400), (24, 840350), (25, 806736), (28, 720300), (30, 672280), (35, 576240), (40, 504210), (42, 480200), (48, 420175), (49, 411600), (50, 403368), (56, 360150), (60, 336140), (70, 288120), (75, 268912), (80, 252105), (84, 240100), (98, 205800), (100, 201684), (105, 192080), (112, 180075), (120, 168070), (140, 144060), (147, 137200), (150, 134456), (168, 120050), (175, 115248), (196, 102900), (200, 100842), (210, 96040), (240, 84035), (245, 82320), (280, 72030), (294, 68600), (300, 67228), (336, 60025), (343, 58800), (350, 57624), (392, 51450), (400, 50421), (420, 48020), (490, 41160), (525, 38416), (560, 36015), (588, 34300), (600, 33614), (686, 29400), (700, 28812), (735, 27440), (784, 25725), (840, 24010), (980, 20580), (1029, 19600), (1050, 19208), (1176, 17150), (1200, 16807), (1225, 16464), (1372, 14700), (1400, 14406), (1470, 13720), (1680, 12005), (1715, 11760), (1960, 10290), (2058, 9800), (2100, 9604), (2352, 8575), (2401, 8400), (2450, 8232), (2744, 7350), (2800, 7203), (2940, 6860), (3430, 5880), (3675, 5488), (3920, 5145), (4116, 4900), (4200, 4802)]