21139208

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{877}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 41722560

約数和(自身を除く): 20583352

約数列:

[1, 2, 4, 8, 23, 46, 92, 131, 184, 262, 524, 877, 1048, 1754, 3013, 3508, 6026, 7016, 12052, 20171, 24104, 40342, 80684, 114887, 161368, 229774, 459548, 919096, 2642401, 5284802, 10569604, 21139208]

約数ペア:

[(1, 21139208), (2, 10569604), (4, 5284802), (8, 2642401), (23, 919096), (46, 459548), (92, 229774), (131, 161368), (184, 114887), (262, 80684), (524, 40342), (877, 24104), (1048, 20171), (1754, 12052), (3013, 7016), (3508, 6026)]