81289904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{267401}}^1$

素因数の和:267428

約数の個数: 20

約数和(自身を含む): 165789240

約数和(自身を除く): 84499336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 267401, 534802, 1069604, 2139208, 4278416, 5080619, 10161238, 20322476, 40644952, 81289904]

約数ペア:

[(1, 81289904), (2, 40644952), (4, 20322476), (8, 10161238), (16, 5080619), (19, 4278416), (38, 2139208), (76, 1069604), (152, 534802), (304, 267401)]