21378932217

素因数分解:

$3^2\times {\mathrm{613}}^1\times {\mathrm{3875101}}^1$

素因数の和:3875720

約数の個数: 12

約数和(自身を含む): 30931064164

約数和(自身を除く): 9552131947

約数列:

[1, 3, 9, 613, 1839, 5517, 3875101, 11625303, 34875909, 2375436913, 7126310739, 21378932217]

約数ペア:

[(1, 21378932217), (3, 7126310739), (9, 2375436913), (613, 34875909), (1839, 11625303), (5517, 3875101)]