18691407

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1307}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 31015296

約数和(自身を除く): 12323889

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 1307, 1589, 2043, 3921, 4767, 9149, 11763, 14301, 27447, 82341, 296689, 890067, 2076823, 2670201, 6230469, 18691407]

約数ペア:

[(1, 18691407), (3, 6230469), (7, 2670201), (9, 2076823), (21, 890067), (63, 296689), (227, 82341), (681, 27447), (1307, 14301), (1589, 11763), (2043, 9149), (3921, 4767)]