18431539

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1162

約数の個数: 16

約数和(自身を含む): 22355200

約数和(自身を除く): 3923661

約数列:

[1, 7, 19, 133, 139, 973, 997, 2641, 6979, 18487, 18943, 132601, 138583, 970081, 2633077, 18431539]

約数ペア:

[(1, 18431539), (7, 2633077), (19, 970081), (133, 138583), (139, 132601), (973, 18943), (997, 18487), (2641, 6979)]