21209418

素因数分解:

$2^1\times 3^3\times {\mathrm{392767}}^1$

素因数の和:392778

約数の個数: 16

約数和(自身を含む): 47132160

約数和(自身を除く): 25922742

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392767, 785534, 1178301, 2356602, 3534903, 7069806, 10604709, 21209418]

約数ペア:

[(1, 21209418), (2, 10604709), (3, 7069806), (6, 3534903), (9, 2356602), (18, 1178301), (27, 785534), (54, 392767)]