221386635

素因数分解:

$3^3\times 5^1\times {\mathrm{1639901}}^1$

素因数の和:1639915

約数の個数: 16

約数和(自身を含む): 393576480

約数和(自身を除く): 172189845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 1639901, 4919703, 8199505, 14759109, 24598515, 44277327, 73795545, 221386635]

約数ペア:

[(1, 221386635), (3, 73795545), (5, 44277327), (9, 24598515), (15, 14759109), (27, 8199505), (45, 4919703), (135, 1639901)]