161657181

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{23117}}^1$

素因数の和:23170

約数の個数: 32

約数和(自身を含む): 281114880

約数和(自身を除く): 119457699

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 6993, 23117, 69351, 161819, 208053, 485457, 624159, 855329, 1456371, 2565987, 4369113, 5987303, 7697961, 17961909, 23093883, 53885727, 161657181]

約数ペア:

[(1, 161657181), (3, 53885727), (7, 23093883), (9, 17961909), (21, 7697961), (27, 5987303), (37, 4369113), (63, 2565987), (111, 1456371), (189, 855329), (259, 624159), (333, 485457), (777, 208053), (999, 161819), (2331, 69351), (6993, 23117)]