81657142

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:892

約数の個数: 32

約数和(自身を含む): 143926272

約数和(自身を除く): 62269130

約数列:

[1, 2, 7, 14, 47, 94, 193, 329, 386, 643, 658, 1286, 1351, 2702, 4501, 9002, 9071, 18142, 30221, 60442, 63497, 124099, 126994, 211547, 248198, 423094, 868693, 1737386, 5832653, 11665306, 40828571, 81657142]

約数ペア:

[(1, 81657142), (2, 40828571), (7, 11665306), (14, 5832653), (47, 1737386), (94, 868693), (193, 423094), (329, 248198), (386, 211547), (643, 126994), (658, 124099), (1286, 63497), (1351, 60442), (2702, 30221), (4501, 18142), (9002, 9071)]