81015228

素因数分解:

$2^2\times 3^{10}\times 7^3$

素因数の和:55

約数の個数: 132

約数和(自身を含む): 248004400

約数和(自身を除く): 166989172

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 81, 84, 98, 108, 126, 147, 162, 189, 196, 243, 252, 294, 324, 343, 378, 441, 486, 567, 588, 686, 729, 756, 882, 972, 1029, 1134, 1323, 1372, 1458, 1701, 1764, 2058, 2187, 2268, 2646, 2916, 3087, 3402, 3969, 4116, 4374, 5103, 5292, 6174, 6561, 6804, 7938, 8748, 9261, 10206, 11907, 12348, 13122, 15309, 15876, 18522, 19683, 20412, 23814, 26244, 27783, 30618, 35721, 37044, 39366, 45927, 47628, 55566, 59049, 61236, 71442, 78732, 83349, 91854, 107163, 111132, 118098, 137781, 142884, 166698, 183708, 214326, 236196, 250047, 275562, 321489, 333396, 413343, 428652, 500094, 551124, 642978, 750141, 826686, 964467, 1000188, 1285956, 1500282, 1653372, 1928934, 2250423, 2893401, 3000564, 3857868, 4500846, 5786802, 6751269, 9001692, 11573604, 13502538, 20253807, 27005076, 40507614, 81015228]

約数ペア:

[(1, 81015228), (2, 40507614), (3, 27005076), (4, 20253807), (6, 13502538), (7, 11573604), (9, 9001692), (12, 6751269), (14, 5786802), (18, 4500846), (21, 3857868), (27, 3000564), (28, 2893401), (36, 2250423), (42, 1928934), (49, 1653372), (54, 1500282), (63, 1285956), (81, 1000188), (84, 964467), (98, 826686), (108, 750141), (126, 642978), (147, 551124), (162, 500094), (189, 428652), (196, 413343), (243, 333396), (252, 321489), (294, 275562), (324, 250047), (343, 236196), (378, 214326), (441, 183708), (486, 166698), (567, 142884), (588, 137781), (686, 118098), (729, 111132), (756, 107163), (882, 91854), (972, 83349), (1029, 78732), (1134, 71442), (1323, 61236), (1372, 59049), (1458, 55566), (1701, 47628), (1764, 45927), (2058, 39366), (2187, 37044), (2268, 35721), (2646, 30618), (2916, 27783), (3087, 26244), (3402, 23814), (3969, 20412), (4116, 19683), (4374, 18522), (5103, 15876), (5292, 15309), (6174, 13122), (6561, 12348), (6804, 11907), (7938, 10206), (8748, 9261)]