21178047

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1489}}^1$

素因数の和:1934

約数の個数: 16

約数和(自身を含む): 30896640

約数和(自身を除く): 9718593

約数列:

[1, 3, 11, 33, 431, 1293, 1489, 4467, 4741, 14223, 16379, 49137, 641759, 1925277, 7059349, 21178047]

約数ペア:

[(1, 21178047), (3, 7059349), (11, 1925277), (33, 641759), (431, 49137), (1293, 16379), (1489, 14223), (4467, 4741)]