18782739

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{271}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 29767680

約数和(自身を除く): 10984941

約数列:

[1, 3, 9, 17, 27, 51, 151, 153, 271, 453, 459, 813, 1359, 2439, 2567, 4077, 4607, 7317, 7701, 13821, 23103, 40921, 41463, 69309, 122763, 124389, 368289, 695657, 1104867, 2086971, 6260913, 18782739]

約数ペア:

[(1, 18782739), (3, 6260913), (9, 2086971), (17, 1104867), (27, 695657), (51, 368289), (151, 124389), (153, 122763), (271, 69309), (453, 41463), (459, 40921), (813, 23103), (1359, 13821), (2439, 7701), (2567, 7317), (4077, 4607)]