19992248

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 38847600

約数和(自身を除く): 18855352

約数列:

[1, 2, 4, 8, 43, 86, 89, 172, 178, 344, 356, 653, 712, 1306, 2612, 3827, 5224, 7654, 15308, 28079, 30616, 56158, 58117, 112316, 116234, 224632, 232468, 464936, 2499031, 4998062, 9996124, 19992248]

約数ペア:

[(1, 19992248), (2, 9996124), (4, 4998062), (8, 2499031), (43, 464936), (86, 232468), (89, 224632), (172, 116234), (178, 112316), (344, 58117), (356, 56158), (653, 30616), (712, 28079), (1306, 15308), (2612, 7654), (3827, 5224)]