278327313

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 465315840

約数和(自身を除く): 186988527

約数列:

[1, 3, 9, 11, 27, 33, 67, 71, 99, 197, 201, 213, 297, 591, 603, 639, 737, 781, 1773, 1809, 1917, 2167, 2211, 2343, 4757, 5319, 6501, 6633, 7029, 13199, 13987, 14271, 19503, 19899, 21087, 39597, 41961, 42813, 52327, 58509, 118791, 125883, 128439, 145189, 153857, 156981, 356373, 377649, 435567, 461571, 470943, 937129, 1306701, 1384713, 1412829, 2811387, 3920103, 4154139, 8434161, 10308419, 25302483, 30925257, 92775771, 278327313]

約数ペア:

[(1, 278327313), (3, 92775771), (9, 30925257), (11, 25302483), (27, 10308419), (33, 8434161), (67, 4154139), (71, 3920103), (99, 2811387), (197, 1412829), (201, 1384713), (213, 1306701), (297, 937129), (591, 470943), (603, 461571), (639, 435567), (737, 377649), (781, 356373), (1773, 156981), (1809, 153857), (1917, 145189), (2167, 128439), (2211, 125883), (2343, 118791), (4757, 58509), (5319, 52327), (6501, 42813), (6633, 41961), (7029, 39597), (13199, 21087), (13987, 19899), (14271, 19503)]