21672603

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15739}}^1$

素因数の和:15768

約数の個数: 20

約数和(自身を含む): 34281720

約数和(自身を除く): 12609117

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15739, 47217, 141651, 267563, 424953, 802689, 1274859, 2408067, 7224201, 21672603]

約数ペア:

[(1, 21672603), (3, 7224201), (9, 2408067), (17, 1274859), (27, 802689), (51, 424953), (81, 267563), (153, 141651), (459, 47217), (1377, 15739)]