81707031

素因数分解:

$3^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{2371}}^1$

素因数の和:2931

約数の個数: 24

約数和(自身を含む): 135185024

約数和(自身を除く): 53477993

約数列:

[1, 3, 7, 9, 21, 63, 547, 1641, 2371, 3829, 4923, 7113, 11487, 16597, 21339, 34461, 49791, 149373, 1296937, 3890811, 9078559, 11672433, 27235677, 81707031]

約数ペア:

[(1, 81707031), (3, 27235677), (7, 11672433), (9, 9078559), (21, 3890811), (63, 1296937), (547, 149373), (1641, 49791), (2371, 34461), (3829, 21339), (4923, 16597), (7113, 11487)]