18990118

素因数分解:

$2^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{9901}}^1$

素因数の和:10047

約数の個数: 16

約数和(自身を含む): 32795424

約数和(自身を除く): 13805306

約数列:

[1, 2, 7, 14, 137, 274, 959, 1918, 9901, 19802, 69307, 138614, 1356437, 2712874, 9495059, 18990118]

約数ペア:

[(1, 18990118), (2, 9495059), (7, 2712874), (14, 1356437), (137, 138614), (274, 69307), (959, 19802), (1918, 9901)]