18996978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3163}}^1$

素因数の和:3199

約数の個数: 64

約数和(自身を含む): 51028992

約数和(自身を除く): 32032014

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 143, 154, 182, 231, 273, 286, 429, 462, 546, 858, 1001, 2002, 3003, 3163, 6006, 6326, 9489, 18978, 22141, 34793, 41119, 44282, 66423, 69586, 82238, 104379, 123357, 132846, 208758, 243551, 246714, 287833, 452309, 487102, 575666, 730653, 863499, 904618, 1356927, 1461306, 1726998, 2713854, 3166163, 6332326, 9498489, 18996978]

約数ペア:

[(1, 18996978), (2, 9498489), (3, 6332326), (6, 3166163), (7, 2713854), (11, 1726998), (13, 1461306), (14, 1356927), (21, 904618), (22, 863499), (26, 730653), (33, 575666), (39, 487102), (42, 452309), (66, 287833), (77, 246714), (78, 243551), (91, 208758), (143, 132846), (154, 123357), (182, 104379), (231, 82238), (273, 69586), (286, 66423), (429, 44282), (462, 41119), (546, 34793), (858, 22141), (1001, 18978), (2002, 9489), (3003, 6326), (3163, 6006)]