81643768

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{65003}}^1$

素因数の和:65166

約数の個数: 16

約数和(自身を含む): 154059480

約数和(自身を除く): 72415712

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 65003, 130006, 260012, 520024, 10205471, 20410942, 40821884, 81643768]

約数ペア:

[(1, 81643768), (2, 40821884), (4, 20410942), (8, 10205471), (157, 520024), (314, 260012), (628, 130006), (1256, 65003)]