21321794

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15473}}^1$

素因数の和:15541

約数の個数: 16

約数和(自身を含む): 35095032

約数和(自身を除く): 13773238

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15473, 30946, 201149, 402298, 820069, 1640138, 10660897, 21321794]

約数ペア:

[(1, 21321794), (2, 10660897), (13, 1640138), (26, 820069), (53, 402298), (106, 201149), (689, 30946), (1378, 15473)]