19978316

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2833}}^1$

素因数の和:2921

約数の個数: 24

約数和(自身を含む): 36660624

約数和(自身を除く): 16682308

約数列:

[1, 2, 4, 41, 43, 82, 86, 164, 172, 1763, 2833, 3526, 5666, 7052, 11332, 116153, 121819, 232306, 243638, 464612, 487276, 4994579, 9989158, 19978316]

約数ペア:

[(1, 19978316), (2, 9989158), (4, 4994579), (41, 487276), (43, 464612), (82, 243638), (86, 232306), (164, 121819), (172, 116153), (1763, 11332), (2833, 7052), (3526, 5666)]