129781645

素因数分解:

$5^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{1321}}^1$

素因数の和:1741

約数の個数: 24

約数和(自身を含む): 181753848

約数和(自身を除く): 51972203

約数列:

[1, 5, 7, 35, 49, 245, 401, 1321, 2005, 2807, 6605, 9247, 14035, 19649, 46235, 64729, 98245, 323645, 529721, 2648605, 3708047, 18540235, 25956329, 129781645]

約数ペア:

[(1, 129781645), (5, 25956329), (7, 18540235), (35, 3708047), (49, 2648605), (245, 529721), (401, 323645), (1321, 98245), (2005, 64729), (2807, 46235), (6605, 19649), (9247, 14035)]