1621319787

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{438313}}^1$

素因数の和:438459

約数の個数: 16

約数和(自身を含む): 2419493280

約数和(自身を除く): 798173493

約数列:

[1, 3, 9, 27, 137, 411, 1233, 3699, 438313, 1314939, 3944817, 11834451, 60048881, 180146643, 540439929, 1621319787]

約数ペア:

[(1, 1621319787), (3, 540439929), (9, 180146643), (27, 60048881), (137, 11834451), (411, 3944817), (1233, 1314939), (3699, 438313)]