19890321

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31723}}^1$

素因数の和:31756

約数の個数: 16

約数和(自身を含む): 30455040

約数和(自身を除く): 10564719

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 31723, 95169, 348953, 602737, 1046859, 1808211, 6630107, 19890321]

約数ペア:

[(1, 19890321), (3, 6630107), (11, 1808211), (19, 1046859), (33, 602737), (57, 348953), (209, 95169), (627, 31723)]