21393470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{305621}}^1$

素因数の和:305635

約数の個数: 16

約数和(自身を含む): 44009568

約数和(自身を除く): 22616098

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 305621, 611242, 1528105, 2139347, 3056210, 4278694, 10696735, 21393470]

約数ペア:

[(1, 21393470), (2, 10696735), (5, 4278694), (7, 3056210), (10, 2139347), (14, 1528105), (35, 611242), (70, 305621)]