1987947

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{1307}}^1$

素因数の和:1339

約数の個数: 18

約数和(自身を含む): 3111732

約数和(自身を除く): 1123785

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1307, 1521, 3921, 11763, 16991, 50973, 152919, 220883, 662649, 1987947]

約数ペア:

[(1, 1987947), (3, 662649), (9, 220883), (13, 152919), (39, 50973), (117, 16991), (169, 11763), (507, 3921), (1307, 1521)]