19901790018

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{733}}^1\times {\mathrm{1063}}^1$

素因数の和:1861

約数の個数: 128

約数和(自身を含む): 49482639360

約数和(自身を除く): 29580849342

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 43, 54, 66, 86, 99, 129, 198, 258, 297, 387, 473, 594, 733, 774, 946, 1063, 1161, 1419, 1466, 2126, 2199, 2322, 2838, 3189, 4257, 4398, 6378, 6597, 8063, 8514, 9567, 11693, 12771, 13194, 16126, 19134, 19791, 23386, 24189, 25542, 28701, 31519, 35079, 39582, 45709, 48378, 57402, 63038, 70158, 72567, 91418, 94557, 105237, 137127, 145134, 189114, 210474, 217701, 274254, 283671, 315711, 346709, 411381, 435402, 502799, 567342, 631422, 693418, 779179, 822762, 851013, 1005598, 1040127, 1234143, 1508397, 1558358, 1702026, 2080254, 2337537, 2468286, 3016794, 3120381, 4525191, 4675074, 6240762, 7012611, 8570969, 9050382, 9361143, 13575573, 14025222, 17141938, 18722286, 21037833, 25712907, 27151146, 33504697, 42075666, 51425814, 67009394, 77138721, 100514091, 154277442, 201028182, 231416163, 301542273, 368551667, 462832326, 603084546, 737103334, 904626819, 1105655001, 1809253638, 2211310002, 3316965003, 6633930006, 9950895009, 19901790018]

約数ペア:

[(1, 19901790018), (2, 9950895009), (3, 6633930006), (6, 3316965003), (9, 2211310002), (11, 1809253638), (18, 1105655001), (22, 904626819), (27, 737103334), (33, 603084546), (43, 462832326), (54, 368551667), (66, 301542273), (86, 231416163), (99, 201028182), (129, 154277442), (198, 100514091), (258, 77138721), (297, 67009394), (387, 51425814), (473, 42075666), (594, 33504697), (733, 27151146), (774, 25712907), (946, 21037833), (1063, 18722286), (1161, 17141938), (1419, 14025222), (1466, 13575573), (2126, 9361143), (2199, 9050382), (2322, 8570969), (2838, 7012611), (3189, 6240762), (4257, 4675074), (4398, 4525191), (6378, 3120381), (6597, 3016794), (8063, 2468286), (8514, 2337537), (9567, 2080254), (11693, 1702026), (12771, 1558358), (13194, 1508397), (16126, 1234143), (19134, 1040127), (19791, 1005598), (23386, 851013), (24189, 822762), (25542, 779179), (28701, 693418), (31519, 631422), (35079, 567342), (39582, 502799), (45709, 435402), (48378, 411381), (57402, 346709), (63038, 315711), (70158, 283671), (72567, 274254), (91418, 217701), (94557, 210474), (105237, 189114), (137127, 145134)]