161609987

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 215115264

約数和(自身を除く): 53505277

約数列:

[1, 7, 11, 41, 49, 71, 77, 103, 287, 451, 497, 539, 721, 781, 1133, 2009, 2911, 3157, 3479, 4223, 5047, 5467, 7313, 7931, 20377, 22099, 29561, 32021, 38269, 46453, 51191, 55517, 80443, 142639, 206927, 224147, 299833, 325171, 358337, 563101, 1569029, 2098831, 2276197, 3298163, 3941707, 14691817, 23087141, 161609987]

約数ペア:

[(1, 161609987), (7, 23087141), (11, 14691817), (41, 3941707), (49, 3298163), (71, 2276197), (77, 2098831), (103, 1569029), (287, 563101), (451, 358337), (497, 325171), (539, 299833), (721, 224147), (781, 206927), (1133, 142639), (2009, 80443), (2911, 55517), (3157, 51191), (3479, 46453), (4223, 38269), (5047, 32021), (5467, 29561), (7313, 22099), (7931, 20377)]