28130128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{135241}}^1$

素因数の和:135262

約数の個数: 20

約数和(自身を含む): 58695028

約数和(自身を除く): 30564900

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 135241, 270482, 540964, 1081928, 1758133, 2163856, 3516266, 7032532, 14065064, 28130128]

約数ペア:

[(1, 28130128), (2, 14065064), (4, 7032532), (8, 3516266), (13, 2163856), (16, 1758133), (26, 1081928), (52, 540964), (104, 270482), (208, 135241)]