28388691

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 44974080

約数和(自身を除く): 16585389

約数列:

[1, 3, 9, 17, 27, 51, 127, 153, 381, 459, 487, 1143, 1461, 2159, 3429, 4383, 6477, 8279, 13149, 19431, 24837, 58293, 61849, 74511, 185547, 223533, 556641, 1051433, 1669923, 3154299, 9462897, 28388691]

約数ペア:

[(1, 28388691), (3, 9462897), (9, 3154299), (17, 1669923), (27, 1051433), (51, 556641), (127, 223533), (153, 185547), (381, 74511), (459, 61849), (487, 58293), (1143, 24837), (1461, 19431), (2159, 13149), (3429, 8279), (4383, 6477)]