20197387856

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30788701}}^1$

素因数の和:30788750

約数の個数: 20

約数和(自身を含む): 40086890004

約数和(自身を除く): 19889502148

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30788701, 61577402, 123154804, 246309608, 492619216, 1262336741, 2524673482, 5049346964, 10098693928, 20197387856]

約数ペア:

[(1, 20197387856), (2, 10098693928), (4, 5049346964), (8, 2524673482), (16, 1262336741), (41, 492619216), (82, 246309608), (164, 123154804), (328, 61577402), (656, 30788701)]