19894000

素因数分解:

$2^4\times 5^3\times 7^3\times {\mathrm{29}}^1$

素因数の和:73

約数の個数: 160

約数和(自身を含む): 58032000

約数和(自身を除く): 38138000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 29, 35, 40, 49, 50, 56, 58, 70, 80, 98, 100, 112, 116, 125, 140, 145, 175, 196, 200, 203, 232, 245, 250, 280, 290, 343, 350, 392, 400, 406, 464, 490, 500, 560, 580, 686, 700, 725, 784, 812, 875, 980, 1000, 1015, 1160, 1225, 1372, 1400, 1421, 1450, 1624, 1715, 1750, 1960, 2000, 2030, 2320, 2450, 2744, 2800, 2842, 2900, 3248, 3430, 3500, 3625, 3920, 4060, 4900, 5075, 5488, 5684, 5800, 6125, 6860, 7000, 7105, 7250, 8120, 8575, 9800, 9947, 10150, 11368, 11600, 12250, 13720, 14000, 14210, 14500, 16240, 17150, 19600, 19894, 20300, 22736, 24500, 25375, 27440, 28420, 29000, 34300, 35525, 39788, 40600, 42875, 49000, 49735, 50750, 56840, 58000, 68600, 71050, 79576, 81200, 85750, 98000, 99470, 101500, 113680, 137200, 142100, 159152, 171500, 177625, 198940, 203000, 248675, 284200, 343000, 355250, 397880, 406000, 497350, 568400, 686000, 710500, 795760, 994700, 1243375, 1421000, 1989400, 2486750, 2842000, 3978800, 4973500, 9947000, 19894000]

約数ペア:

[(1, 19894000), (2, 9947000), (4, 4973500), (5, 3978800), (7, 2842000), (8, 2486750), (10, 1989400), (14, 1421000), (16, 1243375), (20, 994700), (25, 795760), (28, 710500), (29, 686000), (35, 568400), (40, 497350), (49, 406000), (50, 397880), (56, 355250), (58, 343000), (70, 284200), (80, 248675), (98, 203000), (100, 198940), (112, 177625), (116, 171500), (125, 159152), (140, 142100), (145, 137200), (175, 113680), (196, 101500), (200, 99470), (203, 98000), (232, 85750), (245, 81200), (250, 79576), (280, 71050), (290, 68600), (343, 58000), (350, 56840), (392, 50750), (400, 49735), (406, 49000), (464, 42875), (490, 40600), (500, 39788), (560, 35525), (580, 34300), (686, 29000), (700, 28420), (725, 27440), (784, 25375), (812, 24500), (875, 22736), (980, 20300), (1000, 19894), (1015, 19600), (1160, 17150), (1225, 16240), (1372, 14500), (1400, 14210), (1421, 14000), (1450, 13720), (1624, 12250), (1715, 11600), (1750, 11368), (1960, 10150), (2000, 9947), (2030, 9800), (2320, 8575), (2450, 8120), (2744, 7250), (2800, 7105), (2842, 7000), (2900, 6860), (3248, 6125), (3430, 5800), (3500, 5684), (3625, 5488), (3920, 5075), (4060, 4900)]