20891717

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7333}}^1$

素因数の和:7388

約数の個数: 16

約数和(自身を含む): 26754432

約数和(自身を除く): 5862715

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7333, 51331, 80663, 271321, 564641, 1899247, 2984531, 20891717]

約数ペア:

[(1, 20891717), (7, 2984531), (11, 1899247), (37, 564641), (77, 271321), (259, 80663), (407, 51331), (2849, 7333)]