20438649

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:172

約数の個数: 80

約数和(自身を含む): 39726720

約数和(自身を除く): 19288071

約数列:

[1, 3, 7, 9, 11, 21, 27, 29, 33, 63, 77, 81, 87, 99, 113, 189, 203, 231, 261, 297, 319, 339, 567, 609, 693, 783, 791, 891, 957, 1017, 1243, 1827, 2079, 2233, 2349, 2373, 2871, 3051, 3277, 3729, 5481, 6237, 6699, 7119, 8613, 8701, 9153, 9831, 11187, 16443, 20097, 21357, 22939, 25839, 26103, 29493, 33561, 36047, 60291, 64071, 68817, 78309, 88479, 100683, 108141, 180873, 206451, 234927, 252329, 265437, 324423, 619353, 704781, 756987, 973269, 1858059, 2270961, 2919807, 6812883, 20438649]

約数ペア:

[(1, 20438649), (3, 6812883), (7, 2919807), (9, 2270961), (11, 1858059), (21, 973269), (27, 756987), (29, 704781), (33, 619353), (63, 324423), (77, 265437), (81, 252329), (87, 234927), (99, 206451), (113, 180873), (189, 108141), (203, 100683), (231, 88479), (261, 78309), (297, 68817), (319, 64071), (339, 60291), (567, 36047), (609, 33561), (693, 29493), (783, 26103), (791, 25839), (891, 22939), (957, 21357), (1017, 20097), (1243, 16443), (1827, 11187), (2079, 9831), (2233, 9153), (2349, 8701), (2373, 8613), (2871, 7119), (3051, 6699), (3277, 6237), (3729, 5481)]