19552420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8969}}^1$

素因数の和:9087

約数の個数: 24

約数和(自身を含む): 41441400

約数和(自身を除く): 21888980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8969, 17938, 35876, 44845, 89690, 179380, 977621, 1955242, 3910484, 4888105, 9776210, 19552420]

約数ペア:

[(1, 19552420), (2, 9776210), (4, 4888105), (5, 3910484), (10, 1955242), (20, 977621), (109, 179380), (218, 89690), (436, 44845), (545, 35876), (1090, 17938), (2180, 8969)]