21871458

素因数分解:

$2^1\times 3^6\times 7^1\times {\mathrm{2143}}^1$

素因数の和:2170

約数の個数: 56

約数和(自身を含む): 56241408

約数和(自身を除く): 34369950

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 729, 1134, 1458, 1701, 2143, 3402, 4286, 5103, 6429, 10206, 12858, 15001, 19287, 30002, 38574, 45003, 57861, 90006, 115722, 135009, 173583, 270018, 347166, 405027, 520749, 810054, 1041498, 1215081, 1562247, 2430162, 3124494, 3645243, 7290486, 10935729, 21871458]

約数ペア:

[(1, 21871458), (2, 10935729), (3, 7290486), (6, 3645243), (7, 3124494), (9, 2430162), (14, 1562247), (18, 1215081), (21, 1041498), (27, 810054), (42, 520749), (54, 405027), (63, 347166), (81, 270018), (126, 173583), (162, 135009), (189, 115722), (243, 90006), (378, 57861), (486, 45003), (567, 38574), (729, 30002), (1134, 19287), (1458, 15001), (1701, 12858), (2143, 10206), (3402, 6429), (4286, 5103)]