51721360

素因数分解:

$2^4\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1543}}^1$

素因数の和:1975

約数の個数: 40

約数和(自身を含む): 120617280

約数和(自身を除く): 68895920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 838, 1543, 1676, 2095, 3086, 3352, 4190, 6172, 6704, 7715, 8380, 12344, 15430, 16760, 24688, 30860, 33520, 61720, 123440, 646517, 1293034, 2586068, 3232585, 5172136, 6465170, 10344272, 12930340, 25860680, 51721360]

約数ペア:

[(1, 51721360), (2, 25860680), (4, 12930340), (5, 10344272), (8, 6465170), (10, 5172136), (16, 3232585), (20, 2586068), (40, 1293034), (80, 646517), (419, 123440), (838, 61720), (1543, 33520), (1676, 30860), (2095, 24688), (3086, 16760), (3352, 15430), (4190, 12344), (6172, 8380), (6704, 7715)]