81778755

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16879}}^1$

素因数の和:16923

約数の個数: 32

約数和(自身を含む): 145843200

約数和(自身を除く): 64064445

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4845, 16879, 50637, 84395, 253185, 286943, 320701, 860829, 962103, 1434715, 1603505, 4304145, 4810515, 5451917, 16355751, 27259585, 81778755]

約数ペア:

[(1, 81778755), (3, 27259585), (5, 16355751), (15, 5451917), (17, 4810515), (19, 4304145), (51, 1603505), (57, 1434715), (85, 962103), (95, 860829), (255, 320701), (285, 286943), (323, 253185), (969, 84395), (1615, 50637), (4845, 16879)]