278581635

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:345

約数の個数: 96

約数和(自身を含む): 543449088

約数和(自身を除く): 264867453

約数列:

[1, 3, 5, 9, 15, 17, 23, 45, 51, 69, 71, 85, 115, 153, 207, 213, 223, 255, 345, 355, 391, 639, 669, 765, 1035, 1065, 1115, 1173, 1207, 1633, 1955, 2007, 3195, 3345, 3519, 3621, 3791, 4899, 5129, 5865, 6035, 8165, 10035, 10863, 11373, 14697, 15387, 15833, 17595, 18105, 18955, 24495, 25645, 27761, 34119, 46161, 47499, 54315, 56865, 73485, 76935, 79165, 83283, 87193, 138805, 142497, 170595, 230805, 237495, 249849, 261579, 269161, 364159, 416415, 435965, 712485, 784737, 807483, 1092477, 1249245, 1307895, 1345805, 1820795, 2422449, 3277431, 3923685, 4037415, 5462385, 6190703, 12112245, 16387155, 18572109, 30953515, 55716327, 92860545, 278581635]

約数ペア:

[(1, 278581635), (3, 92860545), (5, 55716327), (9, 30953515), (15, 18572109), (17, 16387155), (23, 12112245), (45, 6190703), (51, 5462385), (69, 4037415), (71, 3923685), (85, 3277431), (115, 2422449), (153, 1820795), (207, 1345805), (213, 1307895), (223, 1249245), (255, 1092477), (345, 807483), (355, 784737), (391, 712485), (639, 435965), (669, 416415), (765, 364159), (1035, 269161), (1065, 261579), (1115, 249849), (1173, 237495), (1207, 230805), (1633, 170595), (1955, 142497), (2007, 138805), (3195, 87193), (3345, 83283), (3519, 79165), (3621, 76935), (3791, 73485), (4899, 56865), (5129, 54315), (5865, 47499), (6035, 46161), (8165, 34119), (10035, 27761), (10863, 25645), (11373, 24495), (14697, 18955), (15387, 18105), (15833, 17595)]