18744089

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 25025280

約数和(自身を除く): 6281191

約数列:

[1, 7, 13, 19, 37, 91, 133, 247, 259, 293, 481, 703, 1729, 2051, 3367, 3809, 4921, 5567, 9139, 10841, 26663, 38969, 63973, 72371, 75887, 140933, 205979, 506597, 986531, 1441853, 2677727, 18744089]

約数ペア:

[(1, 18744089), (7, 2677727), (13, 1441853), (19, 986531), (37, 506597), (91, 205979), (133, 140933), (247, 75887), (259, 72371), (293, 63973), (481, 38969), (703, 26663), (1729, 10841), (2051, 9139), (3367, 5567), (3809, 4921)]