17939439

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2141}}^1$

素因数の和:2180

約数の個数: 36

約数和(自身を含む): 31744440

約数和(自身を除く): 13805001

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2141, 2793, 6423, 8379, 14987, 19269, 40679, 44961, 104909, 122037, 134883, 284753, 314727, 366111, 854259, 944181, 1993271, 2562777, 5979813, 17939439]

約数ペア:

[(1, 17939439), (3, 5979813), (7, 2562777), (9, 1993271), (19, 944181), (21, 854259), (49, 366111), (57, 314727), (63, 284753), (133, 134883), (147, 122037), (171, 104909), (399, 44961), (441, 40679), (931, 19269), (1197, 14987), (2141, 8379), (2793, 6423)]