20897870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3779}}^1$

素因数の和:3872

約数の個数: 32

約数和(自身を含む): 43545600

約数和(自身を除く): 22647730

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 79, 158, 395, 553, 790, 1106, 2765, 3779, 5530, 7558, 18895, 26453, 37790, 52906, 132265, 264530, 298541, 597082, 1492705, 2089787, 2985410, 4179574, 10448935, 20897870]

約数ペア:

[(1, 20897870), (2, 10448935), (5, 4179574), (7, 2985410), (10, 2089787), (14, 1492705), (35, 597082), (70, 298541), (79, 264530), (158, 132265), (395, 52906), (553, 37790), (790, 26453), (1106, 18895), (2765, 7558), (3779, 5530)]