208972155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1990211}}^1$

素因数の和:1990226

約数の個数: 16

約数和(自身を含む): 382120704

約数和(自身を除く): 173148549

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1990211, 5970633, 9951055, 13931477, 29853165, 41794431, 69657385, 208972155]

約数ペア:

[(1, 208972155), (3, 69657385), (5, 41794431), (7, 29853165), (15, 13931477), (21, 9951055), (35, 5970633), (105, 1990211)]