81445175

素因数分解:

$5^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2087}}^1$

素因数の和:2327

約数の個数: 24

約数和(自身を含む): 115992576

約数和(自身を除く): 34547401

約数列:

[1, 5, 7, 25, 35, 175, 223, 1115, 1561, 2087, 5575, 7805, 10435, 14609, 39025, 52175, 73045, 365225, 465401, 2327005, 3257807, 11635025, 16289035, 81445175]

約数ペア:

[(1, 81445175), (5, 16289035), (7, 11635025), (25, 3257807), (35, 2327005), (175, 465401), (223, 365225), (1115, 73045), (1561, 52175), (2087, 39025), (5575, 14609), (7805, 10435)]