21180488

素因数分解:

$2^3\times 7^1\times {\mathrm{378223}}^1$

素因数の和:378236

約数の個数: 16

約数和(自身を含む): 45386880

約数和(自身を除く): 24206392

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378223, 756446, 1512892, 2647561, 3025784, 5295122, 10590244, 21180488]

約数ペア:

[(1, 21180488), (2, 10590244), (4, 5295122), (7, 3025784), (8, 2647561), (14, 1512892), (28, 756446), (56, 378223)]