81353205

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42043}}^1$

素因数の和:42097

約数の個数: 24

約数和(自身を含む): 144295008

約数和(自身を除く): 62941803

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 42043, 126129, 210215, 378387, 630645, 1807849, 1891935, 5423547, 9039245, 16270641, 27117735, 81353205]

約数ペア:

[(1, 81353205), (3, 27117735), (5, 16270641), (9, 9039245), (15, 5423547), (43, 1891935), (45, 1807849), (129, 630645), (215, 378387), (387, 210215), (645, 126129), (1935, 42043)]