388938249

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{74381}}^1$

素因数の和:74477

約数の個数: 24

約数和(自身を含む): 649801152

約数和(自身を除く): 260862903

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 5229, 74381, 223143, 520667, 669429, 1562001, 4686003, 6173623, 18520869, 43215361, 55562607, 129646083, 388938249]

約数ペア:

[(1, 388938249), (3, 129646083), (7, 55562607), (9, 43215361), (21, 18520869), (63, 6173623), (83, 4686003), (249, 1562001), (581, 669429), (747, 520667), (1743, 223143), (5229, 74381)]