71781213

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1553}}^1$

素因数の和:1665

約数の個数: 32

約数和(自身を含む): 114573312

約数和(自身を除く): 42792099

約数列:

[1, 3, 7, 21, 31, 71, 93, 213, 217, 497, 651, 1491, 1553, 2201, 4659, 6603, 10871, 15407, 32613, 46221, 48143, 110263, 144429, 330789, 337001, 771841, 1011003, 2315523, 3418153, 10254459, 23927071, 71781213]

約数ペア:

[(1, 71781213), (3, 23927071), (7, 10254459), (21, 3418153), (31, 2315523), (71, 1011003), (93, 771841), (213, 337001), (217, 330789), (497, 144429), (651, 110263), (1491, 48143), (1553, 46221), (2201, 32613), (4659, 15407), (6603, 10871)]