21858398

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{4391}}^1$

素因数の和:4543

約数の個数: 16

約数和(自身を含む): 34784640

約数和(自身を除く): 12926242

約数列:

[1, 2, 19, 38, 131, 262, 2489, 4391, 4978, 8782, 83429, 166858, 575221, 1150442, 10929199, 21858398]

約数ペア:

[(1, 21858398), (2, 10929199), (19, 1150442), (38, 575221), (131, 166858), (262, 83429), (2489, 8782), (4391, 4978)]