21286000

素因数分解:

$2^4\times 5^3\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:419

約数の個数: 80

約数和(自身を含む): 53389440

約数和(自身を除く): 32103440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 125, 145, 200, 232, 250, 290, 367, 400, 464, 500, 580, 725, 734, 1000, 1160, 1450, 1468, 1835, 2000, 2320, 2900, 2936, 3625, 3670, 5800, 5872, 7250, 7340, 9175, 10643, 11600, 14500, 14680, 18350, 21286, 29000, 29360, 36700, 42572, 45875, 53215, 58000, 73400, 85144, 91750, 106430, 146800, 170288, 183500, 212860, 266075, 367000, 425720, 532150, 734000, 851440, 1064300, 1330375, 2128600, 2660750, 4257200, 5321500, 10643000, 21286000]

約数ペア:

[(1, 21286000), (2, 10643000), (4, 5321500), (5, 4257200), (8, 2660750), (10, 2128600), (16, 1330375), (20, 1064300), (25, 851440), (29, 734000), (40, 532150), (50, 425720), (58, 367000), (80, 266075), (100, 212860), (116, 183500), (125, 170288), (145, 146800), (200, 106430), (232, 91750), (250, 85144), (290, 73400), (367, 58000), (400, 53215), (464, 45875), (500, 42572), (580, 36700), (725, 29360), (734, 29000), (1000, 21286), (1160, 18350), (1450, 14680), (1468, 14500), (1835, 11600), (2000, 10643), (2320, 9175), (2900, 7340), (2936, 7250), (3625, 5872), (3670, 5800)]