20491878

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4373}}^1$

素因数の和:4460

約数の個数: 32

約数和(自身を含む): 45349632

約数和(自身を除く): 24857754

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 142, 213, 426, 781, 1562, 2343, 4373, 4686, 8746, 13119, 26238, 48103, 96206, 144309, 288618, 310483, 620966, 931449, 1862898, 3415313, 6830626, 10245939, 20491878]

約数ペア:

[(1, 20491878), (2, 10245939), (3, 6830626), (6, 3415313), (11, 1862898), (22, 931449), (33, 620966), (66, 310483), (71, 288618), (142, 144309), (213, 96206), (426, 48103), (781, 26238), (1562, 13119), (2343, 8746), (4373, 4686)]