21071743

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2089}}^1$

素因数の和:2238

約数の個数: 16

約数和(自身を含む): 26484480

約数和(自身を除く): 5412737

約数列:

[1, 7, 11, 77, 131, 917, 1441, 2089, 10087, 14623, 22979, 160853, 273659, 1915613, 3010249, 21071743]

約数ペア:

[(1, 21071743), (7, 3010249), (11, 1915613), (77, 273659), (131, 160853), (917, 22979), (1441, 14623), (2089, 10087)]