20512010

素因数分解:

$2^1\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{1669}}^1$

素因数の和:2905

約数の個数: 16

約数和(自身を含む): 36973800

約数和(自身を除く): 16461790

約数列:

[1, 2, 5, 10, 1229, 1669, 2458, 3338, 6145, 8345, 12290, 16690, 2051201, 4102402, 10256005, 20512010]

約数ペア:

[(1, 20512010), (2, 10256005), (5, 4102402), (10, 2051201), (1229, 16690), (1669, 12290), (2458, 8345), (3338, 6145)]