20258000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{1447}}^1$

素因数の和:1477

約数の個数: 80

約数和(自身を含む): 56020224

約数和(自身を除く): 35762224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 175, 200, 250, 280, 350, 400, 500, 560, 700, 875, 1000, 1400, 1447, 1750, 2000, 2800, 2894, 3500, 5788, 7000, 7235, 10129, 11576, 14000, 14470, 20258, 23152, 28940, 36175, 40516, 50645, 57880, 72350, 81032, 101290, 115760, 144700, 162064, 180875, 202580, 253225, 289400, 361750, 405160, 506450, 578800, 723500, 810320, 1012900, 1266125, 1447000, 2025800, 2532250, 2894000, 4051600, 5064500, 10129000, 20258000]

約数ペア:

[(1, 20258000), (2, 10129000), (4, 5064500), (5, 4051600), (7, 2894000), (8, 2532250), (10, 2025800), (14, 1447000), (16, 1266125), (20, 1012900), (25, 810320), (28, 723500), (35, 578800), (40, 506450), (50, 405160), (56, 361750), (70, 289400), (80, 253225), (100, 202580), (112, 180875), (125, 162064), (140, 144700), (175, 115760), (200, 101290), (250, 81032), (280, 72350), (350, 57880), (400, 50645), (500, 40516), (560, 36175), (700, 28940), (875, 23152), (1000, 20258), (1400, 14470), (1447, 14000), (1750, 11576), (2000, 10129), (2800, 7235), (2894, 7000), (3500, 5788)]