217656404

素因数分解:

$2^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{72649}}^1$

素因数の和:72767

約数の個数: 24

約数和(自身を含む): 439387200

約数和(自身を除く): 221730796

約数列:

[1, 2, 4, 7, 14, 28, 107, 214, 428, 749, 1498, 2996, 72649, 145298, 290596, 508543, 1017086, 2034172, 7773443, 15546886, 31093772, 54414101, 108828202, 217656404]

約数ペア:

[(1, 217656404), (2, 108828202), (4, 54414101), (7, 31093772), (14, 15546886), (28, 7773443), (107, 2034172), (214, 1017086), (428, 508543), (749, 290596), (1498, 145298), (2996, 72649)]