12990579

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 20805120

約数和(自身を除く): 7814541

約数列:

[1, 3, 7, 21, 29, 83, 87, 203, 249, 257, 581, 609, 771, 1743, 1799, 2407, 5397, 7221, 7453, 16849, 21331, 22359, 50547, 52171, 63993, 149317, 156513, 447951, 618599, 1855797, 4330193, 12990579]

約数ペア:

[(1, 12990579), (3, 4330193), (7, 1855797), (21, 618599), (29, 447951), (83, 156513), (87, 149317), (203, 63993), (249, 52171), (257, 50547), (581, 22359), (609, 21331), (771, 16849), (1743, 7453), (1799, 7221), (2407, 5397)]