21311978685

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1778221}}^1$

素因数の和:1778293

約数の個数: 32

約数和(自身を含む): 36873211392

約数和(自身を除く): 15561232707

約数列:

[1, 3, 5, 15, 17, 47, 51, 85, 141, 235, 255, 705, 799, 2397, 3995, 11985, 1778221, 5334663, 8891105, 26673315, 30229757, 83576387, 90689271, 151148785, 250729161, 417881935, 453446355, 1253645805, 1420798579, 4262395737, 7103992895, 21311978685]

約数ペア:

[(1, 21311978685), (3, 7103992895), (5, 4262395737), (15, 1420798579), (17, 1253645805), (47, 453446355), (51, 417881935), (85, 250729161), (141, 151148785), (235, 90689271), (255, 83576387), (705, 30229757), (799, 26673315), (2397, 8891105), (3995, 5334663), (11985, 1778221)]