20246289

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 32219136

約数和(自身を除く): 11972847

約数列:

[1, 3, 7, 21, 37, 71, 111, 213, 259, 367, 497, 777, 1101, 1491, 2569, 2627, 7707, 7881, 13579, 18389, 26057, 40737, 55167, 78171, 95053, 182399, 285159, 547197, 964109, 2892327, 6748763, 20246289]

約数ペア:

[(1, 20246289), (3, 6748763), (7, 2892327), (21, 964109), (37, 547197), (71, 285159), (111, 182399), (213, 95053), (259, 78171), (367, 55167), (497, 40737), (777, 26057), (1101, 18389), (1491, 13579), (2569, 7881), (2627, 7707)]