81676280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{291701}}^1$

素因数の和:291719

約数の個数: 32

約数和(自身を含む): 210025440

約数和(自身を除く): 128349160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 291701, 583402, 1166804, 1458505, 2041907, 2333608, 2917010, 4083814, 5834020, 8167628, 10209535, 11668040, 16335256, 20419070, 40838140, 81676280]

約数ペア:

[(1, 81676280), (2, 40838140), (4, 20419070), (5, 16335256), (7, 11668040), (8, 10209535), (10, 8167628), (14, 5834020), (20, 4083814), (28, 2917010), (35, 2333608), (40, 2041907), (56, 1458505), (70, 1166804), (140, 583402), (280, 291701)]