20887779

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{5807}}^1$

素因数の和:5930

約数の個数: 16

約数和(自身を含む): 30666240

約数和(自身を除く): 9778461

約数列:

[1, 3, 11, 33, 109, 327, 1199, 3597, 5807, 17421, 63877, 191631, 632963, 1898889, 6962593, 20887779]

約数ペア:

[(1, 20887779), (3, 6962593), (11, 1898889), (33, 632963), (109, 191631), (327, 63877), (1199, 17421), (3597, 5807)]