20545000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{587}}^1$

素因数の和:620

約数の個数: 80

約数和(自身を含む): 55107360

約数和(自身を除く): 34562360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 587, 625, 700, 875, 1000, 1174, 1250, 1400, 1750, 2348, 2500, 2935, 3500, 4109, 4375, 4696, 5000, 5870, 7000, 8218, 8750, 11740, 14675, 16436, 17500, 20545, 23480, 29350, 32872, 35000, 41090, 58700, 73375, 82180, 102725, 117400, 146750, 164360, 205450, 293500, 366875, 410900, 513625, 587000, 733750, 821800, 1027250, 1467500, 2054500, 2568125, 2935000, 4109000, 5136250, 10272500, 20545000]

約数ペア:

[(1, 20545000), (2, 10272500), (4, 5136250), (5, 4109000), (7, 2935000), (8, 2568125), (10, 2054500), (14, 1467500), (20, 1027250), (25, 821800), (28, 733750), (35, 587000), (40, 513625), (50, 410900), (56, 366875), (70, 293500), (100, 205450), (125, 164360), (140, 146750), (175, 117400), (200, 102725), (250, 82180), (280, 73375), (350, 58700), (500, 41090), (587, 35000), (625, 32872), (700, 29350), (875, 23480), (1000, 20545), (1174, 17500), (1250, 16436), (1400, 14675), (1750, 11740), (2348, 8750), (2500, 8218), (2935, 7000), (3500, 5870), (4109, 5000), (4375, 4696)]