21865240

素因数分解:

$2^3\times 5^1\times {\mathrm{546631}}^1$

素因数の和:546642

約数の個数: 16

約数和(自身を含む): 49196880

約数和(自身を除く): 27331640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 546631, 1093262, 2186524, 2733155, 4373048, 5466310, 10932620, 21865240]

約数ペア:

[(1, 21865240), (2, 10932620), (4, 5466310), (5, 4373048), (8, 2733155), (10, 2186524), (20, 1093262), (40, 546631)]