21579129

素因数分解:

$3^8\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:71

約数の個数: 72

約数和(自身を含む): 39678912

約数和(自身を除く): 18099783

約数列:

[1, 3, 9, 11, 13, 23, 27, 33, 39, 69, 81, 99, 117, 143, 207, 243, 253, 297, 299, 351, 429, 621, 729, 759, 891, 897, 1053, 1287, 1863, 2187, 2277, 2673, 2691, 3159, 3289, 3861, 5589, 6561, 6831, 8019, 8073, 9477, 9867, 11583, 16767, 20493, 24057, 24219, 28431, 29601, 34749, 50301, 61479, 72171, 72657, 85293, 88803, 104247, 150903, 184437, 217971, 266409, 312741, 553311, 653913, 799227, 938223, 1659933, 1961739, 2397681, 7193043, 21579129]

約数ペア:

[(1, 21579129), (3, 7193043), (9, 2397681), (11, 1961739), (13, 1659933), (23, 938223), (27, 799227), (33, 653913), (39, 553311), (69, 312741), (81, 266409), (99, 217971), (117, 184437), (143, 150903), (207, 104247), (243, 88803), (253, 85293), (297, 72657), (299, 72171), (351, 61479), (429, 50301), (621, 34749), (729, 29601), (759, 28431), (891, 24219), (897, 24057), (1053, 20493), (1287, 16767), (1863, 11583), (2187, 9867), (2277, 9477), (2673, 8073), (2691, 8019), (3159, 6831), (3289, 6561), (3861, 5589)]