21191512

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37309}}^1$

素因数の和:37386

約数の個数: 16

約数和(自身を含む): 40294800

約数和(自身を除く): 19103288

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37309, 74618, 149236, 298472, 2648939, 5297878, 10595756, 21191512]

約数ペア:

[(1, 21191512), (2, 10595756), (4, 5297878), (8, 2648939), (71, 298472), (142, 149236), (284, 74618), (568, 37309)]