16897821

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 25006080

約数和(自身を除く): 8108259

約数列:

[1, 3, 19, 31, 57, 73, 93, 131, 219, 393, 589, 1387, 1767, 2263, 2489, 4061, 4161, 6789, 7467, 9563, 12183, 28689, 42997, 77159, 128991, 181697, 231477, 296453, 545091, 889359, 5632607, 16897821]

約数ペア:

[(1, 16897821), (3, 5632607), (19, 889359), (31, 545091), (57, 296453), (73, 231477), (93, 181697), (131, 128991), (219, 77159), (393, 42997), (589, 28689), (1387, 12183), (1767, 9563), (2263, 7467), (2489, 6789), (4061, 4161)]