640438512

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{31247}}^1$

素因数の和:31326

約数の個数: 80

約数和(自身を含む): 1921876992

約数和(自身を除く): 1281438480

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 61, 84, 112, 122, 168, 183, 244, 336, 366, 427, 488, 732, 854, 976, 1281, 1464, 1708, 2562, 2928, 3416, 5124, 6832, 10248, 20496, 31247, 62494, 93741, 124988, 187482, 218729, 249976, 374964, 437458, 499952, 656187, 749928, 874916, 1312374, 1499856, 1749832, 1906067, 2624748, 3499664, 3812134, 5249496, 5718201, 7624268, 10498992, 11436402, 13342469, 15248536, 22872804, 26684938, 30497072, 40027407, 45745608, 53369876, 80054814, 91491216, 106739752, 160109628, 213479504, 320219256, 640438512]

約数ペア:

[(1, 640438512), (2, 320219256), (3, 213479504), (4, 160109628), (6, 106739752), (7, 91491216), (8, 80054814), (12, 53369876), (14, 45745608), (16, 40027407), (21, 30497072), (24, 26684938), (28, 22872804), (42, 15248536), (48, 13342469), (56, 11436402), (61, 10498992), (84, 7624268), (112, 5718201), (122, 5249496), (168, 3812134), (183, 3499664), (244, 2624748), (336, 1906067), (366, 1749832), (427, 1499856), (488, 1312374), (732, 874916), (854, 749928), (976, 656187), (1281, 499952), (1464, 437458), (1708, 374964), (2562, 249976), (2928, 218729), (3416, 187482), (5124, 124988), (6832, 93741), (10248, 62494), (20496, 31247)]