21818139

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19603}}^1$

素因数の和:19666

約数の個数: 16

約数和(自身を含む): 33875712

約数和(自身を除く): 12057573

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19603, 58809, 137221, 411663, 1038959, 3116877, 7272713, 21818139]

約数ペア:

[(1, 21818139), (3, 7272713), (7, 3116877), (21, 1038959), (53, 411663), (159, 137221), (371, 58809), (1113, 19603)]