128488420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1\times {\mathrm{433}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 278450928

約数和(自身を除く): 149962508

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 401, 433, 740, 802, 866, 1604, 1732, 2005, 2165, 4010, 4330, 8020, 8660, 14837, 16021, 29674, 32042, 59348, 64084, 74185, 80105, 148370, 160210, 173633, 296740, 320420, 347266, 694532, 868165, 1736330, 3472660, 6424421, 12848842, 25697684, 32122105, 64244210, 128488420]

約数ペア:

[(1, 128488420), (2, 64244210), (4, 32122105), (5, 25697684), (10, 12848842), (20, 6424421), (37, 3472660), (74, 1736330), (148, 868165), (185, 694532), (370, 347266), (401, 320420), (433, 296740), (740, 173633), (802, 160210), (866, 148370), (1604, 80105), (1732, 74185), (2005, 64084), (2165, 59348), (4010, 32042), (4330, 29674), (8020, 16021), (8660, 14837)]