21440210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194911}}^1$

素因数の和:194929

約数の個数: 16

約数和(自身を含む): 42100992

約数和(自身を除く): 20660782

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194911, 389822, 974555, 1949110, 2144021, 4288042, 10720105, 21440210]

約数ペア:

[(1, 21440210), (2, 10720105), (5, 4288042), (10, 2144021), (11, 1949110), (22, 974555), (55, 389822), (110, 194911)]