21005292

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:331

約数の個数: 96

約数和(自身を含む): 61931520

約数和(自身を除く): 40926228

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 127, 132, 154, 179, 231, 254, 308, 358, 381, 462, 508, 537, 716, 762, 889, 924, 1074, 1253, 1397, 1524, 1778, 1969, 2148, 2506, 2667, 2794, 3556, 3759, 3938, 4191, 5012, 5334, 5588, 5907, 7518, 7876, 8382, 9779, 10668, 11814, 13783, 15036, 16764, 19558, 22733, 23628, 27566, 29337, 39116, 41349, 45466, 55132, 58674, 68199, 82698, 90932, 117348, 136398, 159131, 165396, 250063, 272796, 318262, 477393, 500126, 636524, 750189, 954786, 1000252, 1500378, 1750441, 1909572, 3000756, 3500882, 5251323, 7001764, 10502646, 21005292]

約数ペア:

[(1, 21005292), (2, 10502646), (3, 7001764), (4, 5251323), (6, 3500882), (7, 3000756), (11, 1909572), (12, 1750441), (14, 1500378), (21, 1000252), (22, 954786), (28, 750189), (33, 636524), (42, 500126), (44, 477393), (66, 318262), (77, 272796), (84, 250063), (127, 165396), (132, 159131), (154, 136398), (179, 117348), (231, 90932), (254, 82698), (308, 68199), (358, 58674), (381, 55132), (462, 45466), (508, 41349), (537, 39116), (716, 29337), (762, 27566), (889, 23628), (924, 22733), (1074, 19558), (1253, 16764), (1397, 15036), (1524, 13783), (1778, 11814), (1969, 10668), (2148, 9779), (2506, 8382), (2667, 7876), (2794, 7518), (3556, 5907), (3759, 5588), (3938, 5334), (4191, 5012)]