18893817

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13721}}^1$

素因数の和:13750

約数の個数: 20

約数和(自身を含む): 29886516

約数和(自身を除く): 10992699

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13721, 41163, 123489, 233257, 370467, 699771, 1111401, 2099313, 6297939, 18893817]

約数ペア:

[(1, 18893817), (3, 6297939), (9, 2099313), (17, 1111401), (27, 699771), (51, 370467), (81, 233257), (153, 123489), (459, 41163), (1377, 13721)]