21190456

素因数分解:

$2^3\times 7^1\times {\mathrm{378401}}^1$

素因数の和:378414

約数の個数: 16

約数和(自身を含む): 45408240

約数和(自身を除く): 24217784

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378401, 756802, 1513604, 2648807, 3027208, 5297614, 10595228, 21190456]

約数ペア:

[(1, 21190456), (2, 10595228), (4, 5297614), (7, 3027208), (8, 2648807), (14, 1513604), (28, 756802), (56, 378401)]