2005521

素因数分解:

$3^1\times 7^3\times {\mathrm{1949}}^1$

素因数の和:1973

約数の個数: 16

約数和(自身を含む): 3120000

約数和(自身を除く): 1114479

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 1949, 5847, 13643, 40929, 95501, 286503, 668507, 2005521]

約数ペア:

[(1, 2005521), (3, 668507), (7, 286503), (21, 95501), (49, 40929), (147, 13643), (343, 5847), (1029, 1949)]