21069543

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3917}}^1$

素因数の和:4094

約数の個数: 16

約数和(自身を含む): 30842496

約数和(自身を除く): 9772953

約数列:

[1, 3, 11, 33, 163, 489, 1793, 3917, 5379, 11751, 43087, 129261, 638471, 1915413, 7023181, 21069543]

約数ペア:

[(1, 21069543), (3, 7023181), (11, 1915413), (33, 638471), (163, 129261), (489, 43087), (1793, 11751), (3917, 5379)]