21315016

素因数分解:

$2^3\times {\mathrm{487}}^1\times {\mathrm{5471}}^1$

素因数の和:5964

約数の個数: 16

約数和(自身を含む): 40055040

約数和(自身を除く): 18740024

約数列:

[1, 2, 4, 8, 487, 974, 1948, 3896, 5471, 10942, 21884, 43768, 2664377, 5328754, 10657508, 21315016]

約数ペア:

[(1, 21315016), (2, 10657508), (4, 5328754), (8, 2664377), (487, 43768), (974, 21884), (1948, 10942), (3896, 5471)]