28405517

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{587}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 33718272

約数和(自身を除く): 5312755

約数列:

[1, 7, 31, 217, 223, 587, 1561, 4109, 6913, 18197, 48391, 127379, 130901, 916307, 4057931, 28405517]

約数ペア:

[(1, 28405517), (7, 4057931), (31, 916307), (217, 130901), (223, 127379), (587, 48391), (1561, 18197), (4109, 6913)]