18789321

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1\times {\mathrm{887}}^1$

素因数の和:1220

約数の個数: 16

約数和(自身を含む): 26256384

約数和(自身を除く): 7467063

約数列:

[1, 3, 23, 69, 307, 887, 921, 2661, 7061, 20401, 21183, 61203, 272309, 816927, 6263107, 18789321]

約数ペア:

[(1, 18789321), (3, 6263107), (23, 816927), (69, 272309), (307, 61203), (887, 21183), (921, 20401), (2661, 7061)]