128257857

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{52201}}^1$

素因数の和:52230

約数の個数: 32

約数和(自身を含む): 233864960

約数和(自身を除く): 105607103

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 52201, 156603, 365407, 469809, 678613, 1096221, 1409427, 2035839, 3288663, 4750291, 6107517, 9865989, 14250873, 18322551, 42752619, 128257857]

約数ペア:

[(1, 128257857), (3, 42752619), (7, 18322551), (9, 14250873), (13, 9865989), (21, 6107517), (27, 4750291), (39, 3288663), (63, 2035839), (91, 1409427), (117, 1096221), (189, 678613), (273, 469809), (351, 365407), (819, 156603), (2457, 52201)]