19559967

素因数分解:

$3^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{491}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 30511872

約数和(自身を除く): 10951905

約数列:

[1, 3, 7, 21, 49, 147, 271, 491, 813, 1473, 1897, 3437, 5691, 10311, 13279, 24059, 39837, 72177, 133061, 399183, 931427, 2794281, 6519989, 19559967]

約数ペア:

[(1, 19559967), (3, 6519989), (7, 2794281), (21, 931427), (49, 399183), (147, 133061), (271, 72177), (491, 39837), (813, 24059), (1473, 13279), (1897, 10311), (3437, 5691)]