39978729

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 68400384

約数和(自身を除く): 28421655

約数列:

[1, 3, 7, 9, 21, 61, 63, 101, 103, 183, 303, 309, 427, 549, 707, 721, 909, 927, 1281, 2121, 2163, 3843, 6161, 6283, 6363, 6489, 10403, 18483, 18849, 31209, 43127, 43981, 55449, 56547, 72821, 93627, 129381, 131943, 218463, 388143, 395829, 634583, 655389, 1903749, 4442081, 5711247, 13326243, 39978729]

約数ペア:

[(1, 39978729), (3, 13326243), (7, 5711247), (9, 4442081), (21, 1903749), (61, 655389), (63, 634583), (101, 395829), (103, 388143), (183, 218463), (303, 131943), (309, 129381), (427, 93627), (549, 72821), (707, 56547), (721, 55449), (909, 43981), (927, 43127), (1281, 31209), (2121, 18849), (2163, 18483), (3843, 10403), (6161, 6489), (6283, 6363)]