21415572

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 56969640

約数和(自身を除く): 35554068

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 73, 87, 116, 146, 174, 219, 261, 281, 292, 348, 438, 522, 562, 657, 843, 876, 1044, 1124, 1314, 1686, 2117, 2529, 2628, 3372, 4234, 5058, 6351, 8149, 8468, 10116, 12702, 16298, 19053, 20513, 24447, 25404, 32596, 38106, 41026, 48894, 61539, 73341, 76212, 82052, 97788, 123078, 146682, 184617, 246156, 293364, 369234, 594877, 738468, 1189754, 1784631, 2379508, 3569262, 5353893, 7138524, 10707786, 21415572]

約数ペア:

[(1, 21415572), (2, 10707786), (3, 7138524), (4, 5353893), (6, 3569262), (9, 2379508), (12, 1784631), (18, 1189754), (29, 738468), (36, 594877), (58, 369234), (73, 293364), (87, 246156), (116, 184617), (146, 146682), (174, 123078), (219, 97788), (261, 82052), (281, 76212), (292, 73341), (348, 61539), (438, 48894), (522, 41026), (562, 38106), (657, 32596), (843, 25404), (876, 24447), (1044, 20513), (1124, 19053), (1314, 16298), (1686, 12702), (2117, 10116), (2529, 8468), (2628, 8149), (3372, 6351), (4234, 5058)]