21939387

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{1667}}^1$

素因数の和:1818

約数の個数: 16

約数和(自身を含む): 30264192

約数和(自身を除く): 8324805

約数列:

[1, 3, 41, 107, 123, 321, 1667, 4387, 5001, 13161, 68347, 178369, 205041, 535107, 7313129, 21939387]

約数ペア:

[(1, 21939387), (3, 7313129), (41, 535107), (107, 205041), (123, 178369), (321, 68347), (1667, 13161), (4387, 5001)]