21256669

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4259}}^1$

素因数の和:4320

約数の個数: 16

約数和(自身を含む): 26173440

約数和(自身を除く): 4916771

約数列:

[1, 7, 23, 31, 161, 217, 713, 4259, 4991, 29813, 97957, 132029, 685699, 924203, 3036667, 21256669]

約数ペア:

[(1, 21256669), (7, 3036667), (23, 924203), (31, 685699), (161, 132029), (217, 97957), (713, 29813), (4259, 4991)]