21439131

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6761}}^1$

素因数の和:6922

約数の個数: 16

約数和(自身を含む): 32890368

約数和(自身を除く): 11451237

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6761, 20283, 47327, 141981, 1020911, 3062733, 7146377, 21439131]

約数ペア:

[(1, 21439131), (3, 7146377), (7, 3062733), (21, 1020911), (151, 141981), (453, 47327), (1057, 20283), (3171, 6761)]