28136816

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{19759}}^1$

素因数の和:19856

約数の個数: 20

約数和(自身を含む): 55130400

約数和(自身を除く): 26993584

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 19759, 39518, 79036, 158072, 316144, 1758551, 3517102, 7034204, 14068408, 28136816]

約数ペア:

[(1, 28136816), (2, 14068408), (4, 7034204), (8, 3517102), (16, 1758551), (89, 316144), (178, 158072), (356, 79036), (712, 39518), (1424, 19759)]