28218449

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1\times {\mathrm{389}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 33221760

約数和(自身を除く): 5003311

約数列:

[1, 7, 43, 241, 301, 389, 1687, 2723, 10363, 16727, 72541, 93749, 117089, 656243, 4031207, 28218449]

約数ペア:

[(1, 28218449), (7, 4031207), (43, 656243), (241, 117089), (301, 93749), (389, 72541), (1687, 16727), (2723, 10363)]