21008564

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{2417}}^1$

素因数の和:2515

約数の個数: 24

約数和(自身を含む): 38388168

約数和(自身を除く): 17379604

約数列:

[1, 2, 4, 41, 53, 82, 106, 164, 212, 2173, 2417, 4346, 4834, 8692, 9668, 99097, 128101, 198194, 256202, 396388, 512404, 5252141, 10504282, 21008564]

約数ペア:

[(1, 21008564), (2, 10504282), (4, 5252141), (41, 512404), (53, 396388), (82, 256202), (106, 198194), (164, 128101), (212, 99097), (2173, 9668), (2417, 8692), (4346, 4834)]