21204321

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{18077}}^1$

素因数の和:18120

約数の個数: 16

約数和(自身を含む): 31238784

約数和(自身を除く): 10034463

約数列:

[1, 3, 17, 23, 51, 69, 391, 1173, 18077, 54231, 307309, 415771, 921927, 1247313, 7068107, 21204321]

約数ペア:

[(1, 21204321), (3, 7068107), (17, 1247313), (23, 921927), (51, 415771), (69, 307309), (391, 54231), (1173, 18077)]