21001881

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{2339}}^1$

素因数の和:2456

約数の個数: 16

約数和(自身を含む): 29090880

約数和(自身を除く): 8088999

約数列:

[1, 3, 41, 73, 123, 219, 2339, 2993, 7017, 8979, 95899, 170747, 287697, 512241, 7000627, 21001881]

約数ペア:

[(1, 21001881), (3, 7000627), (41, 512241), (73, 287697), (123, 170747), (219, 95899), (2339, 8979), (2993, 7017)]