21392080

素因数分解:

$2^4\times 5^1\times {\mathrm{267401}}^1$

素因数の和:267414

約数の個数: 20

約数和(自身を含む): 49736772

約数和(自身を除く): 28344692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267401, 534802, 1069604, 1337005, 2139208, 2674010, 4278416, 5348020, 10696040, 21392080]

約数ペア:

[(1, 21392080), (2, 10696040), (4, 5348020), (5, 4278416), (8, 2674010), (10, 2139208), (16, 1337005), (20, 1069604), (40, 534802), (80, 267401)]