19514781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 33808320

約数和(自身を除く): 14293539

約数列:

[1, 3, 9, 11, 13, 33, 39, 59, 99, 117, 143, 177, 257, 429, 531, 649, 767, 771, 1287, 1947, 2301, 2313, 2827, 3341, 5841, 6903, 8437, 8481, 10023, 15163, 25311, 25443, 30069, 36751, 45489, 75933, 110253, 136467, 166793, 197119, 330759, 500379, 591357, 1501137, 1774071, 2168309, 6504927, 19514781]

約数ペア:

[(1, 19514781), (3, 6504927), (9, 2168309), (11, 1774071), (13, 1501137), (33, 591357), (39, 500379), (59, 330759), (99, 197119), (117, 166793), (143, 136467), (177, 110253), (257, 75933), (429, 45489), (531, 36751), (649, 30069), (767, 25443), (771, 25311), (1287, 15163), (1947, 10023), (2301, 8481), (2313, 8437), (2827, 6903), (3341, 5841)]