256344648

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21491}}^1$

素因数の和:21578

約数の個数: 64

約数和(自身を含む): 742763520

約数和(自身を除く): 486418872

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 71, 84, 142, 168, 213, 284, 426, 497, 568, 852, 994, 1491, 1704, 1988, 2982, 3976, 5964, 11928, 21491, 42982, 64473, 85964, 128946, 150437, 171928, 257892, 300874, 451311, 515784, 601748, 902622, 1203496, 1525861, 1805244, 3051722, 3610488, 4577583, 6103444, 9155166, 10681027, 12206888, 18310332, 21362054, 32043081, 36620664, 42724108, 64086162, 85448216, 128172324, 256344648]

約数ペア:

[(1, 256344648), (2, 128172324), (3, 85448216), (4, 64086162), (6, 42724108), (7, 36620664), (8, 32043081), (12, 21362054), (14, 18310332), (21, 12206888), (24, 10681027), (28, 9155166), (42, 6103444), (56, 4577583), (71, 3610488), (84, 3051722), (142, 1805244), (168, 1525861), (213, 1203496), (284, 902622), (426, 601748), (497, 515784), (568, 451311), (852, 300874), (994, 257892), (1491, 171928), (1704, 150437), (1988, 128946), (2982, 85964), (3976, 64473), (5964, 42982), (11928, 21491)]