19980656

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{9833}}^1$

素因数の和:9968

約数の個数: 20

約数和(自身を含む): 39021312

約数和(自身を除く): 19040656

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 9833, 19666, 39332, 78664, 157328, 1248791, 2497582, 4995164, 9990328, 19980656]

約数ペア:

[(1, 19980656), (2, 9990328), (4, 4995164), (8, 2497582), (16, 1248791), (127, 157328), (254, 78664), (508, 39332), (1016, 19666), (2032, 9833)]