221865885

素因数分解:

$3^4\times 5^1\times {\mathrm{547817}}^1$

素因数の和:547834

約数の個数: 20

約数和(自身を含む): 397715868

約数和(自身を除く): 175849983

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 547817, 1643451, 2739085, 4930353, 8217255, 14791059, 24651765, 44373177, 73955295, 221865885]

約数ペア:

[(1, 221865885), (3, 73955295), (5, 44373177), (9, 24651765), (15, 14791059), (27, 8217255), (45, 4930353), (81, 2739085), (135, 1643451), (405, 547817)]