21165656

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49919}}^1$

素因数の和:49978

約数の個数: 16

約数和(自身を含む): 40435200

約数和(自身を除く): 19269544

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49919, 99838, 199676, 399352, 2645707, 5291414, 10582828, 21165656]

約数ペア:

[(1, 21165656), (2, 10582828), (4, 5291414), (8, 2645707), (53, 399352), (106, 199676), (212, 99838), (424, 49919)]