21766437

素因数分解:

$3^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{641}}^1$

素因数の和:679

約数の個数: 48

約数和(自身を含む): 40060800

約数和(自身を除く): 18294363

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 343, 441, 539, 641, 693, 1029, 1617, 1923, 3087, 3773, 4487, 4851, 5769, 7051, 11319, 13461, 21153, 31409, 33957, 40383, 49357, 63459, 94227, 148071, 219863, 282681, 345499, 444213, 659589, 1036497, 1978767, 2418493, 3109491, 7255479, 21766437]

約数ペア:

[(1, 21766437), (3, 7255479), (7, 3109491), (9, 2418493), (11, 1978767), (21, 1036497), (33, 659589), (49, 444213), (63, 345499), (77, 282681), (99, 219863), (147, 148071), (231, 94227), (343, 63459), (441, 49357), (539, 40383), (641, 33957), (693, 31409), (1029, 21153), (1617, 13461), (1923, 11319), (3087, 7051), (3773, 5769), (4487, 4851)]