642608001

素因数分解:

$3^2\times 7^2\times {\mathrm{1457161}}^1$

素因数の和:1457181

約数の個数: 18

約数和(自身を含む): 1079757042

約数和(自身を除く): 437149041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 1457161, 4371483, 10200127, 13114449, 30600381, 71400889, 91801143, 214202667, 642608001]

約数ペア:

[(1, 642608001), (3, 214202667), (7, 91801143), (9, 71400889), (21, 30600381), (49, 13114449), (63, 10200127), (147, 4371483), (441, 1457161)]