257953918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1\times {\mathrm{6991}}^1$

素因数の和:7983

約数の個数: 16

約数和(自身を含む): 407773440

約数和(自身を除く): 149819522

約数列:

[1, 2, 19, 38, 971, 1942, 6991, 13982, 18449, 36898, 132829, 265658, 6788261, 13576522, 128976959, 257953918]

約数ペア:

[(1, 257953918), (2, 128976959), (19, 13576522), (38, 6788261), (971, 265658), (1942, 132829), (6991, 36898), (13982, 18449)]