21197656

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64627}}^1$

素因数の和:64674

約数の個数: 16

約数和(自身を含む): 40715640

約数和(自身を除く): 19517984

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64627, 129254, 258508, 517016, 2649707, 5299414, 10598828, 21197656]

約数ペア:

[(1, 21197656), (2, 10598828), (4, 5299414), (8, 2649707), (41, 517016), (82, 258508), (164, 129254), (328, 64627)]