18774561

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 28449792

約数和(自身を除く): 9675231

約数列:

[1, 3, 13, 31, 39, 53, 93, 159, 293, 403, 689, 879, 1209, 1643, 2067, 3809, 4929, 9083, 11427, 15529, 21359, 27249, 46587, 64077, 118079, 201877, 354237, 481399, 605631, 1444197, 6258187, 18774561]

約数ペア:

[(1, 18774561), (3, 6258187), (13, 1444197), (31, 605631), (39, 481399), (53, 354237), (93, 201877), (159, 118079), (293, 64077), (403, 46587), (689, 27249), (879, 21359), (1209, 15529), (1643, 11427), (2067, 9083), (3809, 4929)]