21000299024

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{776179}}^1$

素因数の和:776295

約数の個数: 40

約数和(自身を含む): 43310844000

約数和(自身を除く): 22310544976

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 1424, 1691, 3382, 6764, 13528, 27056, 776179, 1552358, 3104716, 6209432, 12418864, 14747401, 29494802, 58989604, 69079931, 117979208, 138159862, 235958416, 276319724, 552639448, 1105278896, 1312518689, 2625037378, 5250074756, 10500149512, 21000299024]

約数ペア:

[(1, 21000299024), (2, 10500149512), (4, 5250074756), (8, 2625037378), (16, 1312518689), (19, 1105278896), (38, 552639448), (76, 276319724), (89, 235958416), (152, 138159862), (178, 117979208), (304, 69079931), (356, 58989604), (712, 29494802), (1424, 14747401), (1691, 12418864), (3382, 6209432), (6764, 3104716), (13528, 1552358), (27056, 776179)]