21655213

素因数分解:

${\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:332

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 1672787

約数列:

[1, 23, 71, 89, 149, 1633, 2047, 3427, 6319, 10579, 13261, 145337, 243317, 305003, 941531, 21655213]

約数ペア:

[(1, 21655213), (23, 941531), (71, 305003), (89, 243317), (149, 145337), (1633, 13261), (2047, 10579), (3427, 6319)]