18836494

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:264

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 11956466

約数列:

[1, 2, 23, 43, 46, 86, 89, 107, 178, 214, 989, 1978, 2047, 2461, 3827, 4094, 4601, 4922, 7654, 9202, 9523, 19046, 88021, 105823, 176042, 211646, 219029, 409489, 438058, 818978, 9418247, 18836494]

約数ペア:

[(1, 18836494), (2, 9418247), (23, 818978), (43, 438058), (46, 409489), (86, 219029), (89, 211646), (107, 176042), (178, 105823), (214, 88021), (989, 19046), (1978, 9523), (2047, 9202), (2461, 7654), (3827, 4922), (4094, 4601)]