21239956670

素因数分解:

$2^1\times 5^1\times {\mathrm{7127}}^1\times {\mathrm{298021}}^1$

素因数の和:305155

約数の個数: 16

約数和(自身を含む): 38237414688

約数和(自身を除く): 16997458018

約数列:

[1, 2, 5, 10, 7127, 14254, 35635, 71270, 298021, 596042, 1490105, 2980210, 2123995667, 4247991334, 10619978335, 21239956670]

約数ペア:

[(1, 21239956670), (2, 10619978335), (5, 4247991334), (10, 2123995667), (7127, 2980210), (14254, 1490105), (35635, 596042), (71270, 298021)]