18877293

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13709}}^1$

素因数の和:13738

約数の個数: 20

約数和(自身を含む): 29860380

約数和(自身を除く): 10983087

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13709, 41127, 123381, 233053, 370143, 699159, 1110429, 2097477, 6292431, 18877293]

約数ペア:

[(1, 18877293), (3, 6292431), (9, 2097477), (17, 1110429), (27, 699159), (51, 370143), (81, 233053), (153, 123381), (459, 41127), (1377, 13709)]