21780902

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{76157}}^1$

素因数の和:76183

約数の個数: 16

約数和(自身を含む): 38383632

約数和(自身を除く): 16602730

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 76157, 152314, 837727, 990041, 1675454, 1980082, 10890451, 21780902]

約数ペア:

[(1, 21780902), (2, 10890451), (11, 1980082), (13, 1675454), (22, 990041), (26, 837727), (143, 152314), (286, 76157)]