21578728

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87011}}^1$

素因数の和:87048

約数の個数: 16

約数和(自身を含む): 41765760

約数和(自身を除く): 20187032

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87011, 174022, 348044, 696088, 2697341, 5394682, 10789364, 21578728]

約数ペア:

[(1, 21578728), (2, 10789364), (4, 5394682), (8, 2697341), (31, 696088), (62, 348044), (124, 174022), (248, 87011)]