51361840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3259}}^1$

素因数の和:3469

約数の個数: 40

約数和(自身を含む): 120059280

約数和(自身を除く): 68697440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3259, 3940, 6518, 7880, 13036, 15760, 16295, 26072, 32590, 52144, 65180, 130360, 260720, 642023, 1284046, 2568092, 3210115, 5136184, 6420230, 10272368, 12840460, 25680920, 51361840]

約数ペア:

[(1, 51361840), (2, 25680920), (4, 12840460), (5, 10272368), (8, 6420230), (10, 5136184), (16, 3210115), (20, 2568092), (40, 1284046), (80, 642023), (197, 260720), (394, 130360), (788, 65180), (985, 52144), (1576, 32590), (1970, 26072), (3152, 16295), (3259, 15760), (3940, 13036), (6518, 7880)]