20085100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4099}}^1$

素因数の和:4127

約数の個数: 54

約数和(自身を含む): 50712900

約数和(自身を除く): 30627800

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4099, 4900, 8198, 16396, 20495, 28693, 40990, 57386, 81980, 102475, 114772, 143465, 200851, 204950, 286930, 401702, 409900, 573860, 717325, 803404, 1004255, 1434650, 2008510, 2869300, 4017020, 5021275, 10042550, 20085100]

約数ペア:

[(1, 20085100), (2, 10042550), (4, 5021275), (5, 4017020), (7, 2869300), (10, 2008510), (14, 1434650), (20, 1004255), (25, 803404), (28, 717325), (35, 573860), (49, 409900), (50, 401702), (70, 286930), (98, 204950), (100, 200851), (140, 143465), (175, 114772), (196, 102475), (245, 81980), (350, 57386), (490, 40990), (700, 28693), (980, 20495), (1225, 16396), (2450, 8198), (4099, 4900)]