20646495

素因数分解:

$3^5\times 5^1\times {\mathrm{16993}}^1$

素因数の和:17013

約数の個数: 24

約数和(自身を含む): 37114896

約数和(自身を除く): 16468401

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16993, 50979, 84965, 152937, 254895, 458811, 764685, 1376433, 2294055, 4129299, 6882165, 20646495]

約数ペア:

[(1, 20646495), (3, 6882165), (5, 4129299), (9, 2294055), (15, 1376433), (27, 764685), (45, 458811), (81, 254895), (135, 152937), (243, 84965), (405, 50979), (1215, 16993)]