18984651

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 29872128

約数和(自身を除く): 10887477

約数列:

[1, 3, 7, 21, 67, 103, 131, 201, 309, 393, 469, 721, 917, 1407, 2163, 2751, 6901, 8777, 13493, 20703, 26331, 40479, 48307, 61439, 94451, 144921, 184317, 283353, 904031, 2712093, 6328217, 18984651]

約数ペア:

[(1, 18984651), (3, 6328217), (7, 2712093), (21, 904031), (67, 283353), (103, 184317), (131, 144921), (201, 94451), (309, 61439), (393, 48307), (469, 40479), (721, 26331), (917, 20703), (1407, 13493), (2163, 8777), (2751, 6901)]