28049301

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 23099499

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 73, 107, 133, 171, 189, 219, 321, 399, 511, 513, 657, 749, 963, 1197, 1387, 1533, 1971, 2033, 2247, 2889, 3591, 4161, 4599, 6099, 6741, 7811, 9709, 12483, 13797, 14231, 18297, 20223, 23433, 29127, 37449, 42693, 54677, 54891, 70299, 87381, 128079, 148409, 164031, 210897, 262143, 384237, 445227, 492093, 1038863, 1335681, 1476279, 3116589, 4007043, 9349767, 28049301]

約数ペア:

[(1, 28049301), (3, 9349767), (7, 4007043), (9, 3116589), (19, 1476279), (21, 1335681), (27, 1038863), (57, 492093), (63, 445227), (73, 384237), (107, 262143), (133, 210897), (171, 164031), (189, 148409), (219, 128079), (321, 87381), (399, 70299), (511, 54891), (513, 54677), (657, 42693), (749, 37449), (963, 29127), (1197, 23433), (1387, 20223), (1533, 18297), (1971, 14231), (2033, 13797), (2247, 12483), (2889, 9709), (3591, 7811), (4161, 6741), (4599, 6099)]