209521155

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{324839}}^1$

素因数の和:324890

約数の個数: 16

約数和(自身を含む): 343031040

約数和(自身を除く): 133509885

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 324839, 974517, 1624195, 4872585, 13968077, 41904231, 69840385, 209521155]

約数ペア:

[(1, 209521155), (3, 69840385), (5, 41904231), (15, 13968077), (43, 4872585), (129, 1624195), (215, 974517), (645, 324839)]