21664137

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{73}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 35356608

約数和(自身を除く): 13692471

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 73, 187, 219, 253, 391, 529, 561, 759, 803, 1173, 1241, 1587, 1679, 2409, 3723, 4301, 5037, 5819, 8993, 12903, 13651, 17457, 18469, 26979, 28543, 38617, 40953, 55407, 85629, 98923, 115851, 296769, 313973, 424787, 656489, 941919, 1274361, 1969467, 7221379, 21664137]

約数ペア:

[(1, 21664137), (3, 7221379), (11, 1969467), (17, 1274361), (23, 941919), (33, 656489), (51, 424787), (69, 313973), (73, 296769), (187, 115851), (219, 98923), (253, 85629), (391, 55407), (529, 40953), (561, 38617), (759, 28543), (803, 26979), (1173, 18469), (1241, 17457), (1587, 13651), (1679, 12903), (2409, 8993), (3723, 5819), (4301, 5037)]