28159677

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 52380160

約数和(自身を除く): 24220483

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 73, 91, 117, 157, 189, 219, 273, 351, 471, 511, 657, 819, 949, 1099, 1413, 1533, 1971, 2041, 2457, 2847, 3297, 4239, 4599, 6123, 6643, 8541, 9891, 11461, 13797, 14287, 18369, 19929, 25623, 29673, 34383, 42861, 55107, 59787, 80227, 103149, 128583, 148993, 179361, 240681, 309447, 385749, 446979, 722043, 1042951, 1340937, 2166129, 3128853, 4022811, 9386559, 28159677]

約数ペア:

[(1, 28159677), (3, 9386559), (7, 4022811), (9, 3128853), (13, 2166129), (21, 1340937), (27, 1042951), (39, 722043), (63, 446979), (73, 385749), (91, 309447), (117, 240681), (157, 179361), (189, 148993), (219, 128583), (273, 103149), (351, 80227), (471, 59787), (511, 55107), (657, 42861), (819, 34383), (949, 29673), (1099, 25623), (1413, 19929), (1533, 18369), (1971, 14287), (2041, 13797), (2457, 11461), (2847, 9891), (3297, 8541), (4239, 6643), (4599, 6123)]