20966709

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{4133}}^1$

素因数の和:4244

約数の個数: 16

約数和(自身を含む): 29764800

約数和(自身を除く): 8798091

約数列:

[1, 3, 19, 57, 89, 267, 1691, 4133, 5073, 12399, 78527, 235581, 367837, 1103511, 6988903, 20966709]

約数ペア:

[(1, 20966709), (3, 6988903), (19, 1103511), (57, 367837), (89, 235581), (267, 78527), (1691, 12399), (4133, 5073)]