18826227

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1979}}^1$

素因数の和:2143

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 12473613

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 1979, 3171, 5937, 9513, 13853, 17811, 41559, 124677, 298829, 896487, 2091803, 2689461, 6275409, 18826227]

約数ペア:

[(1, 18826227), (3, 6275409), (7, 2689461), (9, 2091803), (21, 896487), (63, 298829), (151, 124677), (453, 41559), (1057, 17811), (1359, 13853), (1979, 9513), (3171, 5937)]