20659716

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:314

約数の個数: 144

約数和(自身を含む): 67616640

約数和(自身を除く): 46956924

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 29, 33, 36, 42, 44, 58, 63, 66, 77, 84, 87, 99, 116, 126, 132, 154, 174, 198, 203, 231, 252, 257, 261, 308, 319, 348, 396, 406, 462, 514, 522, 609, 638, 693, 771, 812, 924, 957, 1028, 1044, 1218, 1276, 1386, 1542, 1799, 1827, 1914, 2233, 2313, 2436, 2772, 2827, 2871, 3084, 3598, 3654, 3828, 4466, 4626, 5397, 5654, 5742, 6699, 7196, 7308, 7453, 8481, 8932, 9252, 10794, 11308, 11484, 13398, 14906, 16191, 16962, 19789, 20097, 21588, 22359, 25443, 26796, 29812, 32382, 33924, 39578, 40194, 44718, 50886, 52171, 59367, 64764, 67077, 79156, 80388, 81983, 89436, 101772, 104342, 118734, 134154, 156513, 163966, 178101, 208684, 237468, 245949, 268308, 313026, 327932, 356202, 469539, 491898, 573881, 626052, 712404, 737847, 939078, 983796, 1147762, 1475694, 1721643, 1878156, 2295524, 2951388, 3443286, 5164929, 6886572, 10329858, 20659716]

約数ペア:

[(1, 20659716), (2, 10329858), (3, 6886572), (4, 5164929), (6, 3443286), (7, 2951388), (9, 2295524), (11, 1878156), (12, 1721643), (14, 1475694), (18, 1147762), (21, 983796), (22, 939078), (28, 737847), (29, 712404), (33, 626052), (36, 573881), (42, 491898), (44, 469539), (58, 356202), (63, 327932), (66, 313026), (77, 268308), (84, 245949), (87, 237468), (99, 208684), (116, 178101), (126, 163966), (132, 156513), (154, 134154), (174, 118734), (198, 104342), (203, 101772), (231, 89436), (252, 81983), (257, 80388), (261, 79156), (308, 67077), (319, 64764), (348, 59367), (396, 52171), (406, 50886), (462, 44718), (514, 40194), (522, 39578), (609, 33924), (638, 32382), (693, 29812), (771, 26796), (812, 25443), (924, 22359), (957, 21588), (1028, 20097), (1044, 19789), (1218, 16962), (1276, 16191), (1386, 14906), (1542, 13398), (1799, 11484), (1827, 11308), (1914, 10794), (2233, 9252), (2313, 8932), (2436, 8481), (2772, 7453), (2827, 7308), (2871, 7196), (3084, 6699), (3598, 5742), (3654, 5654), (3828, 5397), (4466, 4626)]