21612003

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6907}}^1$

素因数の和:7066

約数の個数: 16

約数和(自身を含む): 33158400

約数和(自身を除く): 11546397

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6907, 20721, 48349, 145047, 1029143, 3087429, 7204001, 21612003]

約数ペア:

[(1, 21612003), (3, 7204001), (7, 3087429), (21, 1029143), (149, 145047), (447, 48349), (1043, 20721), (3129, 6907)]