3991955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:598

約数の個数: 16

約数和(自身を含む): 5267808

約数和(自身を除く): 1275853

約数列:

[1, 5, 11, 55, 181, 401, 905, 1991, 2005, 4411, 9955, 22055, 72581, 362905, 798391, 3991955]

約数ペア:

[(1, 3991955), (5, 798391), (11, 362905), (55, 72581), (181, 22055), (401, 9955), (905, 4411), (1991, 2005)]