21320376

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 46417224

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 83, 84, 88, 132, 139, 154, 166, 168, 231, 249, 264, 278, 308, 332, 417, 462, 498, 556, 581, 616, 664, 834, 913, 924, 973, 996, 1112, 1162, 1529, 1668, 1743, 1826, 1848, 1946, 1992, 2324, 2739, 2919, 3058, 3336, 3486, 3652, 3892, 4587, 4648, 5478, 5838, 6116, 6391, 6972, 7304, 7784, 9174, 10703, 10956, 11537, 11676, 12232, 12782, 13944, 18348, 19173, 21406, 21912, 23074, 23352, 25564, 32109, 34611, 36696, 38346, 42812, 46148, 51128, 64218, 69222, 76692, 80759, 85624, 92296, 126907, 128436, 138444, 153384, 161518, 242277, 253814, 256872, 276888, 323036, 380721, 484554, 507628, 646072, 761442, 888349, 969108, 1015256, 1522884, 1776698, 1938216, 2665047, 3045768, 3553396, 5330094, 7106792, 10660188, 21320376]

約数ペア:

[(1, 21320376), (2, 10660188), (3, 7106792), (4, 5330094), (6, 3553396), (7, 3045768), (8, 2665047), (11, 1938216), (12, 1776698), (14, 1522884), (21, 1015256), (22, 969108), (24, 888349), (28, 761442), (33, 646072), (42, 507628), (44, 484554), (56, 380721), (66, 323036), (77, 276888), (83, 256872), (84, 253814), (88, 242277), (132, 161518), (139, 153384), (154, 138444), (166, 128436), (168, 126907), (231, 92296), (249, 85624), (264, 80759), (278, 76692), (308, 69222), (332, 64218), (417, 51128), (462, 46148), (498, 42812), (556, 38346), (581, 36696), (616, 34611), (664, 32109), (834, 25564), (913, 23352), (924, 23074), (973, 21912), (996, 21406), (1112, 19173), (1162, 18348), (1529, 13944), (1668, 12782), (1743, 12232), (1826, 11676), (1848, 11537), (1946, 10956), (1992, 10703), (2324, 9174), (2739, 7784), (2919, 7304), (3058, 6972), (3336, 6391), (3486, 6116), (3652, 5838), (3892, 5478), (4587, 4648)]