21509078

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1\times {\mathrm{541}}^1$

素因数の和:839

約数の個数: 16

約数和(自身を含む): 32806176

約数和(自身を除く): 11297098

約数列:

[1, 2, 103, 193, 206, 386, 541, 1082, 19879, 39758, 55723, 104413, 111446, 208826, 10754539, 21509078]

約数ペア:

[(1, 21509078), (2, 10754539), (103, 208826), (193, 111446), (206, 104413), (386, 55723), (541, 39758), (1082, 19879)]