28021000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{4003}}^1$

素因数の和:4031

約数の個数: 64

約数和(自身を含む): 74954880

約数和(自身を除く): 46933880

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, 700, 875, 1000, 1400, 1750, 3500, 4003, 7000, 8006, 16012, 20015, 28021, 32024, 40030, 56042, 80060, 100075, 112084, 140105, 160120, 200150, 224168, 280210, 400300, 500375, 560420, 700525, 800600, 1000750, 1120840, 1401050, 2001500, 2802100, 3502625, 4003000, 5604200, 7005250, 14010500, 28021000]

約数ペア:

[(1, 28021000), (2, 14010500), (4, 7005250), (5, 5604200), (7, 4003000), (8, 3502625), (10, 2802100), (14, 2001500), (20, 1401050), (25, 1120840), (28, 1000750), (35, 800600), (40, 700525), (50, 560420), (56, 500375), (70, 400300), (100, 280210), (125, 224168), (140, 200150), (175, 160120), (200, 140105), (250, 112084), (280, 100075), (350, 80060), (500, 56042), (700, 40030), (875, 32024), (1000, 28021), (1400, 20015), (1750, 16012), (3500, 8006), (4003, 7000)]