51609520

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1949}}^1$

素因数の和:2293

約数の個数: 40

約数和(自身を含む): 120416400

約数和(自身を除く): 68806880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 1324, 1655, 1949, 2648, 3310, 3898, 5296, 6620, 7796, 9745, 13240, 15592, 19490, 26480, 31184, 38980, 77960, 155920, 645119, 1290238, 2580476, 3225595, 5160952, 6451190, 10321904, 12902380, 25804760, 51609520]

約数ペア:

[(1, 51609520), (2, 25804760), (4, 12902380), (5, 10321904), (8, 6451190), (10, 5160952), (16, 3225595), (20, 2580476), (40, 1290238), (80, 645119), (331, 155920), (662, 77960), (1324, 38980), (1655, 31184), (1949, 26480), (2648, 19490), (3310, 15592), (3898, 13240), (5296, 9745), (6620, 7796)]