21330872

素因数分解:

$2^3\times {\mathrm{557}}^1\times {\mathrm{4787}}^1$

素因数の和:5350

約数の個数: 16

約数和(自身を含む): 40075560

約数和(自身を除く): 18744688

約数列:

[1, 2, 4, 8, 557, 1114, 2228, 4456, 4787, 9574, 19148, 38296, 2666359, 5332718, 10665436, 21330872]

約数ペア:

[(1, 21330872), (2, 10665436), (4, 5332718), (8, 2666359), (557, 38296), (1114, 19148), (2228, 9574), (4456, 4787)]