28390288

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{19937}}^1$

素因数の和:20034

約数の個数: 20

約数和(自身を含む): 55627020

約数和(自身を除く): 27236732

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 19937, 39874, 79748, 159496, 318992, 1774393, 3548786, 7097572, 14195144, 28390288]

約数ペア:

[(1, 28390288), (2, 14195144), (4, 7097572), (8, 3548786), (16, 1774393), (89, 318992), (178, 159496), (356, 79748), (712, 39874), (1424, 19937)]