71872420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{32969}}^1$

素因数の和:33087

約数の個数: 24

約数和(自身を含む): 152321400

約数和(自身を除く): 80448980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 32969, 65938, 131876, 164845, 329690, 659380, 3593621, 7187242, 14374484, 17968105, 35936210, 71872420]

約数ペア:

[(1, 71872420), (2, 35936210), (4, 17968105), (5, 14374484), (10, 7187242), (20, 3593621), (109, 659380), (218, 329690), (436, 164845), (545, 131876), (1090, 65938), (2180, 32969)]