20902000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{1493}}^1$

素因数の和:1523

約数の個数: 80

約数和(自身を含む): 57799872

約数和(自身を除く): 36897872

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, 1493, 1750, 2000, 2800, 2986, 3500, 5972, 7000, 7465, 10451, 11944, 14000, 14930, 20902, 23888, 29860, 37325, 41804, 52255, 59720, 74650, 83608, 104510, 119440, 149300, 167216, 186625, 209020, 261275, 298600, 373250, 418040, 522550, 597200, 746500, 836080, 1045100, 1306375, 1493000, 2090200, 2612750, 2986000, 4180400, 5225500, 10451000, 20902000]

約数ペア:

[(1, 20902000), (2, 10451000), (4, 5225500), (5, 4180400), (7, 2986000), (8, 2612750), (10, 2090200), (14, 1493000), (16, 1306375), (20, 1045100), (25, 836080), (28, 746500), (35, 597200), (40, 522550), (50, 418040), (56, 373250), (70, 298600), (80, 261275), (100, 209020), (112, 186625), (125, 167216), (140, 149300), (175, 119440), (200, 104510), (250, 83608), (280, 74650), (350, 59720), (400, 52255), (500, 41804), (560, 37325), (700, 29860), (875, 23888), (1000, 20902), (1400, 14930), (1493, 14000), (1750, 11944), (2000, 10451), (2800, 7465), (2986, 7000), (3500, 5972)]