2008121968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:686

約数の個数: 80

約数和(自身を含む): 4114022400

約数和(自身を除く): 2105900432

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 127, 142, 248, 254, 284, 449, 496, 508, 568, 898, 1016, 1136, 1796, 2032, 2201, 3592, 3937, 4402, 7184, 7874, 8804, 9017, 13919, 15748, 17608, 18034, 27838, 31496, 31879, 35216, 36068, 55676, 57023, 62992, 63758, 72136, 111352, 114046, 127516, 144272, 222704, 228092, 255032, 279527, 456184, 510064, 559054, 912368, 988249, 1118108, 1767713, 1976498, 2236216, 3535426, 3952996, 4048633, 4472432, 7070852, 7905992, 8097266, 14141704, 15811984, 16194532, 28283408, 32389064, 64778128, 125507623, 251015246, 502030492, 1004060984, 2008121968]

約数ペア:

[(1, 2008121968), (2, 1004060984), (4, 502030492), (8, 251015246), (16, 125507623), (31, 64778128), (62, 32389064), (71, 28283408), (124, 16194532), (127, 15811984), (142, 14141704), (248, 8097266), (254, 7905992), (284, 7070852), (449, 4472432), (496, 4048633), (508, 3952996), (568, 3535426), (898, 2236216), (1016, 1976498), (1136, 1767713), (1796, 1118108), (2032, 988249), (2201, 912368), (3592, 559054), (3937, 510064), (4402, 456184), (7184, 279527), (7874, 255032), (8804, 228092), (9017, 222704), (13919, 144272), (15748, 127516), (17608, 114046), (18034, 111352), (27838, 72136), (31496, 63758), (31879, 62992), (35216, 57023), (36068, 55676)]