20325855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2621}}^1$

素因数の和:2687

約数の個数: 32

約数和(自身を含む): 36246528

約数和(自身を除く): 15920673

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 517, 705, 1551, 2585, 2621, 7755, 7863, 13105, 28831, 39315, 86493, 123187, 144155, 369561, 432465, 615935, 1355057, 1847805, 4065171, 6775285, 20325855]

約数ペア:

[(1, 20325855), (3, 6775285), (5, 4065171), (11, 1847805), (15, 1355057), (33, 615935), (47, 432465), (55, 369561), (141, 144155), (165, 123187), (235, 86493), (517, 39315), (705, 28831), (1551, 13105), (2585, 7863), (2621, 7755)]