21217016

素因数分解:

$2^3\times {\mathrm{167}}^1\times {\mathrm{15881}}^1$

素因数の和:16054

約数の個数: 16

約数和(自身を含む): 40022640

約数和(自身を除く): 18805624

約数列:

[1, 2, 4, 8, 167, 334, 668, 1336, 15881, 31762, 63524, 127048, 2652127, 5304254, 10608508, 21217016]

約数ペア:

[(1, 21217016), (2, 10608508), (4, 5304254), (8, 2652127), (167, 127048), (334, 63524), (668, 31762), (1336, 15881)]