21492597

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 34048000

約数和(自身を除く): 12555403

約数列:

[1, 3, 7, 21, 37, 111, 139, 199, 259, 417, 597, 777, 973, 1393, 2919, 4179, 5143, 7363, 15429, 22089, 27661, 36001, 51541, 82983, 108003, 154623, 193627, 580881, 1023457, 3070371, 7164199, 21492597]

約数ペア:

[(1, 21492597), (3, 7164199), (7, 3070371), (21, 1023457), (37, 580881), (111, 193627), (139, 154623), (199, 108003), (259, 82983), (417, 51541), (597, 36001), (777, 27661), (973, 22089), (1393, 15429), (2919, 7363), (4179, 5143)]