21407816

素因数分解:

$2^3\times {\mathrm{1373}}^1\times {\mathrm{1949}}^1$

素因数の和:3328

約数の個数: 16

約数和(自身を含む): 40189500

約数和(自身を除く): 18781684

約数列:

[1, 2, 4, 8, 1373, 1949, 2746, 3898, 5492, 7796, 10984, 15592, 2675977, 5351954, 10703908, 21407816]

約数ペア:

[(1, 21407816), (2, 10703908), (4, 5351954), (8, 2675977), (1373, 15592), (1949, 10984), (2746, 7796), (3898, 5492)]