21688884

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 120

約数和(自身を含む): 66187968

約数和(自身を除く): 44499084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 73, 81, 84, 108, 126, 131, 146, 162, 189, 219, 252, 262, 292, 324, 378, 393, 438, 511, 524, 567, 657, 756, 786, 876, 917, 1022, 1134, 1179, 1314, 1533, 1572, 1834, 1971, 2044, 2268, 2358, 2628, 2751, 3066, 3537, 3668, 3942, 4599, 4716, 5502, 5913, 6132, 7074, 7884, 8253, 9198, 9563, 10611, 11004, 11826, 13797, 14148, 16506, 18396, 19126, 21222, 23652, 24759, 27594, 28689, 33012, 38252, 41391, 42444, 49518, 55188, 57378, 66941, 74277, 82782, 86067, 99036, 114756, 133882, 148554, 165564, 172134, 200823, 258201, 267764, 297108, 344268, 401646, 516402, 602469, 774603, 803292, 1032804, 1204938, 1549206, 1807407, 2409876, 3098412, 3614814, 5422221, 7229628, 10844442, 21688884]

約数ペア:

[(1, 21688884), (2, 10844442), (3, 7229628), (4, 5422221), (6, 3614814), (7, 3098412), (9, 2409876), (12, 1807407), (14, 1549206), (18, 1204938), (21, 1032804), (27, 803292), (28, 774603), (36, 602469), (42, 516402), (54, 401646), (63, 344268), (73, 297108), (81, 267764), (84, 258201), (108, 200823), (126, 172134), (131, 165564), (146, 148554), (162, 133882), (189, 114756), (219, 99036), (252, 86067), (262, 82782), (292, 74277), (324, 66941), (378, 57378), (393, 55188), (438, 49518), (511, 42444), (524, 41391), (567, 38252), (657, 33012), (756, 28689), (786, 27594), (876, 24759), (917, 23652), (1022, 21222), (1134, 19126), (1179, 18396), (1314, 16506), (1533, 14148), (1572, 13797), (1834, 11826), (1971, 11004), (2044, 10611), (2268, 9563), (2358, 9198), (2628, 8253), (2751, 7884), (3066, 7074), (3537, 6132), (3668, 5913), (3942, 5502), (4599, 4716)]