21157677

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2377}}^1$

素因数の和:2449

約数の個数: 24

約数和(自身を含む): 32645184

約数和(自身を除く): 11487507

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2377, 2967, 7131, 8901, 21393, 54671, 102211, 164013, 306633, 492039, 919899, 2350853, 7052559, 21157677]

約数ペア:

[(1, 21157677), (3, 7052559), (9, 2350853), (23, 919899), (43, 492039), (69, 306633), (129, 164013), (207, 102211), (387, 54671), (989, 21393), (2377, 8901), (2967, 7131)]