21405444

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 51696960

約数和(自身を除く): 30291516

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 139, 164, 246, 278, 313, 417, 492, 556, 626, 834, 939, 1252, 1668, 1878, 3756, 5699, 11398, 12833, 17097, 22796, 25666, 34194, 38499, 43507, 51332, 68388, 76998, 87014, 130521, 153996, 174028, 261042, 522084, 1783787, 3567574, 5351361, 7135148, 10702722, 21405444]

約数ペア:

[(1, 21405444), (2, 10702722), (3, 7135148), (4, 5351361), (6, 3567574), (12, 1783787), (41, 522084), (82, 261042), (123, 174028), (139, 153996), (164, 130521), (246, 87014), (278, 76998), (313, 68388), (417, 51332), (492, 43507), (556, 38499), (626, 34194), (834, 25666), (939, 22796), (1252, 17097), (1668, 12833), (1878, 11398), (3756, 5699)]