19957904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65651}}^1$

素因数の和:65678

約数の個数: 20

約数和(自身を含む): 40704240

約数和(自身を除く): 20746336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65651, 131302, 262604, 525208, 1050416, 1247369, 2494738, 4989476, 9978952, 19957904]

約数ペア:

[(1, 19957904), (2, 9978952), (4, 4989476), (8, 2494738), (16, 1247369), (19, 1050416), (38, 525208), (76, 262604), (152, 131302), (304, 65651)]