21720202

素因数分解:

$2^1\times 7^1\times {\mathrm{811}}^1\times {\mathrm{1913}}^1$

素因数の和:2733

約数の個数: 16

約数和(自身を含む): 37300032

約数和(自身を除く): 15579830

約数列:

[1, 2, 7, 14, 811, 1622, 1913, 3826, 5677, 11354, 13391, 26782, 1551443, 3102886, 10860101, 21720202]

約数ペア:

[(1, 21720202), (2, 10860101), (7, 3102886), (14, 1551443), (811, 26782), (1622, 13391), (1913, 11354), (3826, 5677)]