20818000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{1487}}^1$

素因数の和:1517

約数の個数: 80

約数和(自身を含む): 57567744

約数和(自身を除く): 36749744

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, 1487, 1750, 2000, 2800, 2974, 3500, 5948, 7000, 7435, 10409, 11896, 14000, 14870, 20818, 23792, 29740, 37175, 41636, 52045, 59480, 74350, 83272, 104090, 118960, 148700, 166544, 185875, 208180, 260225, 297400, 371750, 416360, 520450, 594800, 743500, 832720, 1040900, 1301125, 1487000, 2081800, 2602250, 2974000, 4163600, 5204500, 10409000, 20818000]

約数ペア:

[(1, 20818000), (2, 10409000), (4, 5204500), (5, 4163600), (7, 2974000), (8, 2602250), (10, 2081800), (14, 1487000), (16, 1301125), (20, 1040900), (25, 832720), (28, 743500), (35, 594800), (40, 520450), (50, 416360), (56, 371750), (70, 297400), (80, 260225), (100, 208180), (112, 185875), (125, 166544), (140, 148700), (175, 118960), (200, 104090), (250, 83272), (280, 74350), (350, 59480), (400, 52045), (500, 41636), (560, 37175), (700, 29740), (875, 23792), (1000, 20818), (1400, 14870), (1487, 14000), (1750, 11896), (2000, 10409), (2800, 7435), (2974, 7000), (3500, 5948)]