20565904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67651}}^1$

素因数の和:67678

約数の個数: 20

約数和(自身を含む): 41944240

約数和(自身を除く): 21378336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67651, 135302, 270604, 541208, 1082416, 1285369, 2570738, 5141476, 10282952, 20565904]

約数ペア:

[(1, 20565904), (2, 10282952), (4, 5141476), (8, 2570738), (16, 1285369), (19, 1082416), (38, 541208), (76, 270604), (152, 135302), (304, 67651)]