209706781

素因数分解:

${\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:445

約数の個数: 24

約数和(自身を含む): 236905760

約数和(自身を除く): 27198979

約数列:

[1, 17, 19, 181, 211, 289, 323, 3077, 3439, 3587, 4009, 5491, 38191, 52309, 58463, 60979, 68153, 649247, 725629, 993871, 1158601, 11037199, 12335693, 209706781]

約数ペア:

[(1, 209706781), (17, 12335693), (19, 11037199), (181, 1158601), (211, 993871), (289, 725629), (323, 649247), (3077, 68153), (3439, 60979), (3587, 58463), (4009, 52309), (5491, 38191)]