18987339

素因数分解:

$3^1\times 7^1\times {\mathrm{577}}^1\times {\mathrm{1567}}^1$

素因数の和:2154

約数の個数: 16

約数和(自身を含む): 29001728

約数和(自身を除く): 10014389

約数列:

[1, 3, 7, 21, 577, 1567, 1731, 4039, 4701, 10969, 12117, 32907, 904159, 2712477, 6329113, 18987339]

約数ペア:

[(1, 18987339), (3, 6329113), (7, 2712477), (21, 904159), (577, 32907), (1567, 12117), (1731, 10969), (4039, 4701)]