639697984

素因数分解:

$2^6\times {\mathrm{127}}^1\times {\mathrm{211}}^1\times {\mathrm{373}}^1$

素因数の和:723

約数の個数: 56

約数和(自身を含む): 1288905728

約数和(自身を除く): 649207744

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 211, 254, 373, 422, 508, 746, 844, 1016, 1492, 1688, 2032, 2984, 3376, 4064, 5968, 6752, 8128, 11936, 13504, 23872, 26797, 47371, 53594, 78703, 94742, 107188, 157406, 189484, 214376, 314812, 378968, 428752, 629624, 757936, 857504, 1259248, 1515872, 1715008, 2518496, 3031744, 5036992, 9995281, 19990562, 39981124, 79962248, 159924496, 319848992, 639697984]

約数ペア:

[(1, 639697984), (2, 319848992), (4, 159924496), (8, 79962248), (16, 39981124), (32, 19990562), (64, 9995281), (127, 5036992), (211, 3031744), (254, 2518496), (373, 1715008), (422, 1515872), (508, 1259248), (746, 857504), (844, 757936), (1016, 629624), (1492, 428752), (1688, 378968), (2032, 314812), (2984, 214376), (3376, 189484), (4064, 157406), (5968, 107188), (6752, 94742), (8128, 78703), (11936, 53594), (13504, 47371), (23872, 26797)]