278318997

素因数分解:

$3^4\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:496

約数の個数: 60

約数和(自身を含む): 464443980

約数和(自身を除く): 186124983

約数列:

[1, 3, 9, 11, 27, 33, 73, 81, 99, 121, 219, 297, 363, 389, 657, 803, 891, 1089, 1167, 1971, 2409, 3267, 3501, 4279, 5913, 7227, 8833, 9801, 10503, 12837, 21681, 26499, 28397, 31509, 38511, 47069, 65043, 79497, 85191, 115533, 141207, 238491, 255573, 312367, 346599, 423621, 715473, 766719, 937101, 1270863, 2300157, 2811303, 3436037, 3812589, 8433909, 10308111, 25301727, 30924333, 92772999, 278318997]

約数ペア:

[(1, 278318997), (3, 92772999), (9, 30924333), (11, 25301727), (27, 10308111), (33, 8433909), (73, 3812589), (81, 3436037), (99, 2811303), (121, 2300157), (219, 1270863), (297, 937101), (363, 766719), (389, 715473), (657, 423621), (803, 346599), (891, 312367), (1089, 255573), (1167, 238491), (1971, 141207), (2409, 115533), (3267, 85191), (3501, 79497), (4279, 65043), (5913, 47069), (7227, 38511), (8833, 31509), (9801, 28397), (10503, 26499), (12837, 21681)]