21256438

素因数分解:

$2^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{2297}}^1$

素因数の和:2967

約数の個数: 16

約数和(自身を含む): 36510624

約数和(自身を除く): 15254186

約数列:

[1, 2, 7, 14, 661, 1322, 2297, 4594, 4627, 9254, 16079, 32158, 1518317, 3036634, 10628219, 21256438]

約数ペア:

[(1, 21256438), (2, 10628219), (7, 3036634), (14, 1518317), (661, 32158), (1322, 16079), (2297, 9254), (4594, 4627)]