21102004

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 46480896

約数和(自身を除く): 25378892

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 131, 154, 262, 308, 523, 524, 917, 1046, 1441, 1834, 2092, 2882, 3661, 3668, 5753, 5764, 7322, 10087, 11506, 14644, 20174, 23012, 40271, 40348, 68513, 80542, 137026, 161084, 274052, 479591, 753643, 959182, 1507286, 1918364, 3014572, 5275501, 10551002, 21102004]

約数ペア:

[(1, 21102004), (2, 10551002), (4, 5275501), (7, 3014572), (11, 1918364), (14, 1507286), (22, 959182), (28, 753643), (44, 479591), (77, 274052), (131, 161084), (154, 137026), (262, 80542), (308, 68513), (523, 40348), (524, 40271), (917, 23012), (1046, 20174), (1441, 14644), (1834, 11506), (2092, 10087), (2882, 7322), (3661, 5764), (3668, 5753)]