28189973

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{563}}^1$

素因数の和:904

約数の個数: 16

約数和(自身を含む): 33785856

約数和(自身を除く): 5595883

約数列:

[1, 7, 23, 161, 311, 563, 2177, 3941, 7153, 12949, 50071, 90643, 175093, 1225651, 4027139, 28189973]

約数ペア:

[(1, 28189973), (7, 4027139), (23, 1225651), (161, 175093), (311, 90643), (563, 50071), (2177, 12949), (3941, 7153)]