20998065

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127261}}^1$

素因数の和:127280

約数の個数: 16

約数和(自身を含む): 36651456

約数和(自身を除く): 15653391

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127261, 381783, 636305, 1399871, 1908915, 4199613, 6999355, 20998065]

約数ペア:

[(1, 20998065), (3, 6999355), (5, 4199613), (11, 1908915), (15, 1399871), (33, 636305), (55, 381783), (165, 127261)]