78654401

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{353}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 91190400

約数和(自身を除く): 12535999

約数列:

[1, 7, 139, 229, 353, 973, 1603, 2471, 31831, 49067, 80837, 222817, 343469, 565859, 11236343, 78654401]

約数ペア:

[(1, 78654401), (7, 11236343), (139, 565859), (229, 343469), (353, 222817), (973, 80837), (1603, 49067), (2471, 31831)]