21084656

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15877}}^1$

素因数の和:15968

約数の個数: 20

約数和(自身を含む): 41346312

約数和(自身を除く): 20261656

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15877, 31754, 63508, 127016, 254032, 1317791, 2635582, 5271164, 10542328, 21084656]

約数ペア:

[(1, 21084656), (2, 10542328), (4, 5271164), (8, 2635582), (16, 1317791), (83, 254032), (166, 127016), (332, 63508), (664, 31754), (1328, 15877)]