21116968

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64381}}^1$

素因数の和:64428

約数の個数: 16

約数和(自身を含む): 40560660

約数和(自身を除く): 19443692

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64381, 128762, 257524, 515048, 2639621, 5279242, 10558484, 21116968]

約数ペア:

[(1, 21116968), (2, 10558484), (4, 5279242), (8, 2639621), (41, 515048), (82, 257524), (164, 128762), (328, 64381)]