217601321

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1\times {\mathrm{2687}}^1$

素因数の和:3220

約数の個数: 16

約数和(自身を含む): 260112384

約数和(自身を除く): 42511063

約数列:

[1, 7, 23, 161, 503, 2687, 3521, 11569, 18809, 61801, 80983, 432607, 1351561, 9460927, 31085903, 217601321]

約数ペア:

[(1, 217601321), (7, 31085903), (23, 9460927), (161, 1351561), (503, 432607), (2687, 80983), (3521, 61801), (11569, 18809)]