668639781

素因数分解:

$3^2\times {\mathrm{281}}^1\times {\mathrm{419}}^1\times {\mathrm{631}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 973103040

約数和(自身を除く): 304463259

約数列:

[1, 3, 9, 281, 419, 631, 843, 1257, 1893, 2529, 3771, 5679, 117739, 177311, 264389, 353217, 531933, 793167, 1059651, 1595799, 2379501, 74293309, 222879927, 668639781]

約数ペア:

[(1, 668639781), (3, 222879927), (9, 74293309), (281, 2379501), (419, 1595799), (631, 1059651), (843, 793167), (1257, 531933), (1893, 353217), (2529, 264389), (3771, 177311), (5679, 117739)]