21008378

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{3889}}^1$

素因数の和:4001

約数の個数: 16

約数和(自身を含む): 32816040

約数和(自身を除く): 11807662

約数列:

[1, 2, 37, 73, 74, 146, 2701, 3889, 5402, 7778, 143893, 283897, 287786, 567794, 10504189, 21008378]

約数ペア:

[(1, 21008378), (2, 10504189), (37, 567794), (73, 287786), (74, 283897), (146, 143893), (2701, 7778), (3889, 5402)]