21687666

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:216

約数の個数: 128

約数和(自身を含む): 61157376

約数和(自身を除く): 39469710

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 23, 26, 33, 39, 42, 46, 66, 69, 77, 78, 91, 138, 143, 154, 157, 161, 182, 231, 253, 273, 286, 299, 314, 322, 429, 462, 471, 483, 506, 546, 598, 759, 858, 897, 942, 966, 1001, 1099, 1518, 1727, 1771, 1794, 2002, 2041, 2093, 2198, 3003, 3289, 3297, 3454, 3542, 3611, 4082, 4186, 5181, 5313, 6006, 6123, 6279, 6578, 6594, 7222, 9867, 10362, 10626, 10833, 12089, 12246, 12558, 14287, 19734, 21666, 22451, 23023, 24178, 25277, 28574, 36267, 39721, 42861, 44902, 46046, 46943, 50554, 67353, 69069, 72534, 75831, 79442, 85722, 93886, 119163, 134706, 138138, 140829, 151662, 157157, 238326, 278047, 281658, 314314, 328601, 471471, 516373, 556094, 657202, 834141, 942942, 985803, 1032746, 1549119, 1668282, 1971606, 3098238, 3614611, 7229222, 10843833, 21687666]

約数ペア:

[(1, 21687666), (2, 10843833), (3, 7229222), (6, 3614611), (7, 3098238), (11, 1971606), (13, 1668282), (14, 1549119), (21, 1032746), (22, 985803), (23, 942942), (26, 834141), (33, 657202), (39, 556094), (42, 516373), (46, 471471), (66, 328601), (69, 314314), (77, 281658), (78, 278047), (91, 238326), (138, 157157), (143, 151662), (154, 140829), (157, 138138), (161, 134706), (182, 119163), (231, 93886), (253, 85722), (273, 79442), (286, 75831), (299, 72534), (314, 69069), (322, 67353), (429, 50554), (462, 46943), (471, 46046), (483, 44902), (506, 42861), (546, 39721), (598, 36267), (759, 28574), (858, 25277), (897, 24178), (942, 23023), (966, 22451), (1001, 21666), (1099, 19734), (1518, 14287), (1727, 12558), (1771, 12246), (1794, 12089), (2002, 10833), (2041, 10626), (2093, 10362), (2198, 9867), (3003, 7222), (3289, 6594), (3297, 6578), (3454, 6279), (3542, 6123), (3611, 6006), (4082, 5313), (4186, 5181)]