27977481

素因数分解:

$3^4\times 7^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 80

約数和(自身を含む): 52272000

約数和(自身を除く): 24294519

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 53, 57, 63, 81, 133, 147, 159, 171, 189, 343, 371, 399, 441, 477, 513, 567, 931, 1007, 1029, 1113, 1197, 1323, 1431, 1539, 2597, 2793, 3021, 3087, 3339, 3591, 3969, 4293, 6517, 7049, 7791, 8379, 9063, 9261, 10017, 10773, 18179, 19551, 21147, 23373, 25137, 27189, 27783, 30051, 49343, 54537, 58653, 63441, 70119, 75411, 81567, 148029, 163611, 175959, 190323, 210357, 345401, 444087, 490833, 527877, 570969, 1036203, 1332261, 1472499, 3108609, 3996783, 9325827, 27977481]

約数ペア:

[(1, 27977481), (3, 9325827), (7, 3996783), (9, 3108609), (19, 1472499), (21, 1332261), (27, 1036203), (49, 570969), (53, 527877), (57, 490833), (63, 444087), (81, 345401), (133, 210357), (147, 190323), (159, 175959), (171, 163611), (189, 148029), (343, 81567), (371, 75411), (399, 70119), (441, 63441), (477, 58653), (513, 54537), (567, 49343), (931, 30051), (1007, 27783), (1029, 27189), (1113, 25137), (1197, 23373), (1323, 21147), (1431, 19551), (1539, 18179), (2597, 10773), (2793, 10017), (3021, 9261), (3087, 9063), (3339, 8379), (3591, 7791), (3969, 7049), (4293, 6517)]