21093921

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{563}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 32026176

約数和(自身を除く): 10932255

約数列:

[1, 3, 9, 23, 69, 181, 207, 543, 563, 1629, 1689, 4163, 5067, 12489, 12949, 37467, 38847, 101903, 116541, 305709, 917127, 2343769, 7031307, 21093921]

約数ペア:

[(1, 21093921), (3, 7031307), (9, 2343769), (23, 917127), (69, 305709), (181, 116541), (207, 101903), (543, 38847), (563, 37467), (1629, 12949), (1689, 12489), (4163, 5067)]