639919679

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{29123}}^1$

素因数の和:29246

約数の個数: 16

約数和(自身を含む): 758621952

約数和(自身を除く): 118702273

約数列:

[1, 7, 43, 73, 301, 511, 3139, 21973, 29123, 203861, 1252289, 2125979, 8766023, 14881853, 91417097, 639919679]

約数ペア:

[(1, 639919679), (7, 91417097), (43, 14881853), (73, 8766023), (301, 2125979), (511, 1252289), (3139, 203861), (21973, 29123)]