21513776

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70769}}^1$

素因数の和:70796

約数の個数: 20

約数和(自身を含む): 43877400

約数和(自身を除く): 22363624

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70769, 141538, 283076, 566152, 1132304, 1344611, 2689222, 5378444, 10756888, 21513776]

約数ペア:

[(1, 21513776), (2, 10756888), (4, 5378444), (8, 2689222), (16, 1344611), (19, 1132304), (38, 566152), (76, 283076), (152, 141538), (304, 70769)]