21167223

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2131}}^1$

素因数の和:2195

約数の個数: 32

約数和(自身を含む): 36022272

約数和(自身を除く): 14855049

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 129, 231, 301, 473, 903, 1419, 2131, 3311, 6393, 9933, 14917, 23441, 44751, 70323, 91633, 164087, 274899, 492261, 641431, 1007963, 1924293, 3023889, 7055741, 21167223]

約数ペア:

[(1, 21167223), (3, 7055741), (7, 3023889), (11, 1924293), (21, 1007963), (33, 641431), (43, 492261), (77, 274899), (129, 164087), (231, 91633), (301, 70323), (473, 44751), (903, 23441), (1419, 14917), (2131, 9933), (3311, 6393)]