16561503

素因数分解:

$3^4\times 7^1\times {\mathrm{29209}}^1$

素因数の和:29228

約数の個数: 20

約数和(自身を含む): 28275280

約数和(自身を除く): 11713777

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 29209, 87627, 204463, 262881, 613389, 788643, 1840167, 2365929, 5520501, 16561503]

約数ペア:

[(1, 16561503), (3, 5520501), (7, 2365929), (9, 1840167), (21, 788643), (27, 613389), (63, 262881), (81, 204463), (189, 87627), (567, 29209)]