21145263

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{29}}^3$

素因数の和:124

約数の個数: 24

約数和(自身を含む): 31019280

約数和(自身を除く): 9874017

約数列:

[1, 3, 17, 29, 51, 87, 289, 493, 841, 867, 1479, 2523, 8381, 14297, 24389, 25143, 42891, 73167, 243049, 414613, 729147, 1243839, 7048421, 21145263]

約数ペア:

[(1, 21145263), (3, 7048421), (17, 1243839), (29, 729147), (51, 414613), (87, 243049), (289, 73167), (493, 42891), (841, 25143), (867, 24389), (1479, 14297), (2523, 8381)]