20902413

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52387}}^1$

素因数の和:52416

約数の個数: 16

約数和(自身を含む): 33528320

約数和(自身を除く): 12625907

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52387, 157161, 366709, 995353, 1100127, 2986059, 6967471, 20902413]

約数ペア:

[(1, 20902413), (3, 6967471), (7, 2986059), (19, 1100127), (21, 995353), (57, 366709), (133, 157161), (399, 52387)]