66697281

素因数分解:

$3^2\times 7^2\times {\mathrm{151241}}^1$

素因数の和:151261

約数の個数: 18

約数和(自身を含む): 112070322

約数和(自身を除く): 45373041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 151241, 453723, 1058687, 1361169, 3176061, 7410809, 9528183, 22232427, 66697281]

約数ペア:

[(1, 66697281), (3, 22232427), (7, 9528183), (9, 7410809), (21, 3176061), (49, 1361169), (63, 1058687), (147, 453723), (441, 151241)]