287136304

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{991}}^1$

素因数の和:1218

約数の個数: 80

約数和(自身を含む): 688844800

約数和(自身を除く): 401708496

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 199, 208, 364, 398, 728, 796, 991, 1393, 1456, 1592, 1982, 2587, 2786, 3184, 3964, 5174, 5572, 6937, 7928, 10348, 11144, 12883, 13874, 15856, 18109, 20696, 22288, 25766, 27748, 36218, 41392, 51532, 55496, 72436, 90181, 103064, 110992, 144872, 180362, 197209, 206128, 289744, 360724, 394418, 721448, 788836, 1380463, 1442896, 1577672, 2563717, 2760926, 3155344, 5127434, 5521852, 10254868, 11043704, 17946019, 20509736, 22087408, 35892038, 41019472, 71784076, 143568152, 287136304]

約数ペア:

[(1, 287136304), (2, 143568152), (4, 71784076), (7, 41019472), (8, 35892038), (13, 22087408), (14, 20509736), (16, 17946019), (26, 11043704), (28, 10254868), (52, 5521852), (56, 5127434), (91, 3155344), (104, 2760926), (112, 2563717), (182, 1577672), (199, 1442896), (208, 1380463), (364, 788836), (398, 721448), (728, 394418), (796, 360724), (991, 289744), (1393, 206128), (1456, 197209), (1592, 180362), (1982, 144872), (2587, 110992), (2786, 103064), (3184, 90181), (3964, 72436), (5174, 55496), (5572, 51532), (6937, 41392), (7928, 36218), (10348, 27748), (11144, 25766), (12883, 22288), (13874, 20696), (15856, 18109)]