21178854

素因数分解:

$2^1\times 3^3\times {\mathrm{392201}}^1$

素因数の和:392212

約数の個数: 16

約数和(自身を含む): 47064240

約数和(自身を除く): 25885386

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392201, 784402, 1176603, 2353206, 3529809, 7059618, 10589427, 21178854]

約数ペア:

[(1, 21178854), (2, 10589427), (3, 7059618), (6, 3529809), (9, 2353206), (18, 1176603), (27, 784402), (54, 392201)]