19135431

素因数分解:

$3^2\times 7^2\times {\mathrm{43391}}^1$

素因数の和:43411

約数の個数: 18

約数和(自身を含む): 32153472

約数和(自身を除く): 13018041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43391, 130173, 303737, 390519, 911211, 2126159, 2733633, 6378477, 19135431]

約数ペア:

[(1, 19135431), (3, 6378477), (7, 2733633), (9, 2126159), (21, 911211), (49, 390519), (63, 303737), (147, 130173), (441, 43391)]