20008900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10531}}^1$

素因数の和:10564

約数の個数: 36

約数和(自身を含む): 45708880

約数和(自身を除く): 25699980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 10531, 21062, 42124, 52655, 105310, 200089, 210620, 263275, 400178, 526550, 800356, 1000445, 1053100, 2000890, 4001780, 5002225, 10004450, 20008900]

約数ペア:

[(1, 20008900), (2, 10004450), (4, 5002225), (5, 4001780), (10, 2000890), (19, 1053100), (20, 1000445), (25, 800356), (38, 526550), (50, 400178), (76, 263275), (95, 210620), (100, 200089), (190, 105310), (380, 52655), (475, 42124), (950, 21062), (1900, 10531)]