18663463

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:463

約数の個数: 24

約数和(自身を含む): 23729328

約数和(自身を除く): 5065865

約数列:

[1, 7, 13, 49, 83, 91, 353, 581, 637, 1079, 2471, 4067, 4589, 7553, 17297, 29299, 32123, 52871, 205093, 224861, 380887, 1435651, 2666209, 18663463]

約数ペア:

[(1, 18663463), (7, 2666209), (13, 1435651), (49, 380887), (83, 224861), (91, 205093), (353, 52871), (581, 32123), (637, 29299), (1079, 17297), (2471, 7553), (4067, 4589)]