21440628

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1867}}^1$

素因数の和:1917

約数の個数: 72

約数和(自身を含む): 61195680

約数和(自身を除く): 39755052

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 29, 33, 36, 44, 58, 66, 87, 99, 116, 132, 174, 198, 261, 319, 348, 396, 522, 638, 957, 1044, 1276, 1867, 1914, 2871, 3734, 3828, 5601, 5742, 7468, 11202, 11484, 16803, 20537, 22404, 33606, 41074, 54143, 61611, 67212, 82148, 108286, 123222, 162429, 184833, 216572, 246444, 324858, 369666, 487287, 595573, 649716, 739332, 974574, 1191146, 1786719, 1949148, 2382292, 3573438, 5360157, 7146876, 10720314, 21440628]

約数ペア:

[(1, 21440628), (2, 10720314), (3, 7146876), (4, 5360157), (6, 3573438), (9, 2382292), (11, 1949148), (12, 1786719), (18, 1191146), (22, 974574), (29, 739332), (33, 649716), (36, 595573), (44, 487287), (58, 369666), (66, 324858), (87, 246444), (99, 216572), (116, 184833), (132, 162429), (174, 123222), (198, 108286), (261, 82148), (319, 67212), (348, 61611), (396, 54143), (522, 41074), (638, 33606), (957, 22404), (1044, 20537), (1276, 16803), (1867, 11484), (1914, 11202), (2871, 7468), (3734, 5742), (3828, 5601)]