21761901

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1549}}^1$

素因数の和:1785

約数の個数: 24

約数和(自身を含む): 36108800

約数和(自身を除く): 14346899

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1549, 1561, 2007, 4647, 4683, 10843, 13941, 14049, 32529, 97587, 345427, 1036281, 2417989, 3108843, 7253967, 21761901]

約数ペア:

[(1, 21761901), (3, 7253967), (7, 3108843), (9, 2417989), (21, 1036281), (63, 345427), (223, 97587), (669, 32529), (1549, 14049), (1561, 13941), (2007, 10843), (4647, 4683)]