21138843

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{14897}}^1$

素因数の和:14954

約数の個数: 16

約数和(自身を含む): 31464576

約数和(自身を除く): 10325733

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 14897, 44691, 163867, 491601, 640571, 1921713, 7046281, 21138843]

約数ペア:

[(1, 21138843), (3, 7046281), (11, 1921713), (33, 640571), (43, 491601), (129, 163867), (473, 44691), (1419, 14897)]