21120776

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{11839}}^1$

素因数の和:12068

約数の個数: 16

約数和(自身を含む): 39782400

約数和(自身を除く): 18661624

約数列:

[1, 2, 4, 8, 223, 446, 892, 1784, 11839, 23678, 47356, 94712, 2640097, 5280194, 10560388, 21120776]

約数ペア:

[(1, 21120776), (2, 10560388), (4, 5280194), (8, 2640097), (223, 94712), (446, 47356), (892, 23678), (1784, 11839)]