20912752

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3061}}^1$

素因数の和:3137

約数の個数: 40

約数和(自身を含む): 47081312

約数和(自身を除く): 26168560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 3061, 3416, 6122, 6832, 12244, 21427, 24488, 42854, 48976, 85708, 171416, 186721, 342832, 373442, 746884, 1307047, 1493768, 2614094, 2987536, 5228188, 10456376, 20912752]

約数ペア:

[(1, 20912752), (2, 10456376), (4, 5228188), (7, 2987536), (8, 2614094), (14, 1493768), (16, 1307047), (28, 746884), (56, 373442), (61, 342832), (112, 186721), (122, 171416), (244, 85708), (427, 48976), (488, 42854), (854, 24488), (976, 21427), (1708, 12244), (3061, 6832), (3416, 6122)]