138475780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{63521}}^1$

素因数の和:63639

約数の個数: 24

約数和(自身を含む): 293471640

約数和(自身を除く): 154995860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 63521, 127042, 254084, 317605, 635210, 1270420, 6923789, 13847578, 27695156, 34618945, 69237890, 138475780]

約数ペア:

[(1, 138475780), (2, 69237890), (4, 34618945), (5, 27695156), (10, 13847578), (20, 6923789), (109, 1270420), (218, 635210), (436, 317605), (545, 254084), (1090, 127042), (2180, 63521)]