1921779

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{653}}^1$

素因数の和:771

約数の個数: 16

約数和(自身を含む): 2877600

約数和(自身を除く): 955821

約数列:

[1, 3, 9, 27, 109, 327, 653, 981, 1959, 2943, 5877, 17631, 71177, 213531, 640593, 1921779]

約数ペア:

[(1, 1921779), (3, 640593), (9, 213531), (27, 71177), (109, 17631), (327, 5877), (653, 2943), (981, 1959)]