21123774

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 58060800

約数和(自身を除く): 36937026

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 29, 41, 42, 47, 54, 58, 63, 82, 87, 94, 123, 126, 141, 174, 189, 203, 246, 261, 282, 287, 329, 369, 378, 406, 423, 522, 574, 609, 658, 738, 783, 846, 861, 987, 1107, 1189, 1218, 1269, 1363, 1566, 1722, 1827, 1927, 1974, 2214, 2378, 2538, 2583, 2726, 2961, 3567, 3654, 3854, 4089, 5166, 5481, 5781, 5922, 7134, 7749, 8178, 8323, 8883, 9541, 10701, 10962, 11562, 12267, 13489, 15498, 16646, 17343, 17766, 19082, 21402, 24534, 24969, 26978, 28623, 32103, 34686, 36801, 40467, 49938, 52029, 55883, 57246, 64206, 73602, 74907, 80934, 85869, 104058, 111766, 121401, 149814, 167649, 171738, 224721, 242802, 257607, 335298, 364203, 391181, 449442, 502947, 515214, 728406, 782362, 1005894, 1173543, 1508841, 2347086, 3017682, 3520629, 7041258, 10561887, 21123774]

約数ペア:

[(1, 21123774), (2, 10561887), (3, 7041258), (6, 3520629), (7, 3017682), (9, 2347086), (14, 1508841), (18, 1173543), (21, 1005894), (27, 782362), (29, 728406), (41, 515214), (42, 502947), (47, 449442), (54, 391181), (58, 364203), (63, 335298), (82, 257607), (87, 242802), (94, 224721), (123, 171738), (126, 167649), (141, 149814), (174, 121401), (189, 111766), (203, 104058), (246, 85869), (261, 80934), (282, 74907), (287, 73602), (329, 64206), (369, 57246), (378, 55883), (406, 52029), (423, 49938), (522, 40467), (574, 36801), (609, 34686), (658, 32103), (738, 28623), (783, 26978), (846, 24969), (861, 24534), (987, 21402), (1107, 19082), (1189, 17766), (1218, 17343), (1269, 16646), (1363, 15498), (1566, 13489), (1722, 12267), (1827, 11562), (1927, 10962), (1974, 10701), (2214, 9541), (2378, 8883), (2538, 8323), (2583, 8178), (2726, 7749), (2961, 7134), (3567, 5922), (3654, 5781), (3854, 5481), (4089, 5166)]