21383901

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{523}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 39237120

約数和(自身を除く): 17853219

約数列:

[1, 3, 7, 9, 11, 21, 33, 59, 63, 77, 99, 177, 231, 413, 523, 531, 649, 693, 1239, 1569, 1947, 3661, 3717, 4543, 4707, 5753, 5841, 10983, 13629, 17259, 30857, 32949, 40271, 40887, 51777, 92571, 120813, 215999, 277713, 339427, 362439, 647997, 1018281, 1943991, 2375989, 3054843, 7127967, 21383901]

約数ペア:

[(1, 21383901), (3, 7127967), (7, 3054843), (9, 2375989), (11, 1943991), (21, 1018281), (33, 647997), (59, 362439), (63, 339427), (77, 277713), (99, 215999), (177, 120813), (231, 92571), (413, 51777), (523, 40887), (531, 40271), (649, 32949), (693, 30857), (1239, 17259), (1569, 13629), (1947, 10983), (3661, 5841), (3717, 5753), (4543, 4707)]