18578727

素因数分解:

$3^4\times {\mathrm{347}}^1\times {\mathrm{661}}^1$

素因数の和:1020

約数の個数: 20

約数和(自身を含む): 27875496

約数和(自身を除く): 9296769

約数列:

[1, 3, 9, 27, 81, 347, 661, 1041, 1983, 3123, 5949, 9369, 17847, 28107, 53541, 229367, 688101, 2064303, 6192909, 18578727]

約数ペア:

[(1, 18578727), (3, 6192909), (9, 2064303), (27, 688101), (81, 229367), (347, 53541), (661, 28107), (1041, 17847), (1983, 9369), (3123, 5949)]